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Open Source @Github

Do not download the app, use the website

https://idiallo.com/blog/dont-download-apps
879•foxfired•11h ago•481 comments

Open Sauce is a confoundingly brilliant Bay Area event

https://www.jeffgeerling.com/blog/2025/open-sauce-confoundingly-brilliant-bay-area-event
106•rbanffy•2d ago•39 comments

It's time for modern CSS to kill the SPA

https://www.jonoalderson.com/conjecture/its-time-for-modern-css-to-kill-the-spa/
475•tambourine_man•12h ago•270 comments

CCTV Footage Captures the First-Ever Video of an Earthquake Fault in Motion

https://www.smithsonianmag.com/smart-news/cctv-footage-captures-the-first-ever-video-of-an-earthquake-fault-in-motion-shining-a-rare-light-on-seismic-dynamics-180987034/
129•chrononaut•6h ago•20 comments

Turn any diagram image into an editable Draw.io file. No more redrawing

https://imagetodrawio.com/
58•matthewshere•3h ago•12 comments

Simon Tatham's Portable Puzzle Collection

https://www.chiark.greenend.org.uk/~sgtatham/puzzles/
28•sogen•3h ago•5 comments

The Rise and Fall of the Hanseatic League

https://worksinprogress.co/issue/the-rise-and-fall-of-the-hanseatic-league/
17•loeber•3d ago•1 comments

It's a DE9, not a DB9 (but we know what you mean)

https://news.sparkfun.com/14298
383•jgrahamc•20h ago•247 comments

Why I Do Programming

https://esafev.com/notes/why-i-do-programming/
17•artmare•3h ago•4 comments

Windsurf employee #2: I was given a payout of only 1% what my shares where worth

https://twitter.com/premqnair/status/1948420769945682413
564•rfurmani•1d ago•386 comments

Never write your own date parsing library

https://www.zachleat.com/web/adventures-in-date-parsing/
187•ulrischa•16h ago•233 comments

Why MIT switched from Scheme to Python (2009)

https://www.wisdomandwonder.com/link/2110/why-mit-switched-from-scheme-to-python
225•borski•17h ago•187 comments

Keep Pydantic out of your Domain Layer

https://coderik.nl/posts/keep-pydantic-out-of-your-domain-layer/
5•erikvdven•3d ago•0 comments

Efficient Computer's Electron E1 CPU – 100x more efficient than Arm?

https://morethanmoore.substack.com/p/efficient-computers-electron-e1-cpu
202•rpiguy•17h ago•70 comments

Vanilla JavaScript support for Tailwind Plus

https://tailwindcss.com/blog/vanilla-js-support-for-tailwind-plus
246•ulrischa•15h ago•127 comments

Animated Cursors

https://tattoy.sh/news/animated-cursors/
185•speckx•15h ago•40 comments

Show HN: Auto Favicon MCP Server

https://github.com/dh1011/auto-favicon-mcp
12•dh1011•2h ago•1 comments

Experimental surgery performed by AI-driven surgical robot

https://arstechnica.com/science/2025/07/experimental-surgery-performed-by-ai-driven-surgical-robot/
93•horseradish•13h ago•97 comments

The future is not self-hosted

https://www.drewlyton.com/story/the-future-is-not-self-hosted/
314•drew_lytle•21h ago•288 comments

Steam, Itch.io are pulling ‘porn’ games. Critics say it's a slippery slope

https://www.wired.com/story/steam-itchio-are-pulling-porn-games-censorship/
494•6d6b73•17h ago•642 comments

Ambigrammia: Between Creation and Discovery (Hofstadter, 2025)

https://yalebooks.yale.edu/book/9780300275438/ambigrammia/
5•lorenzuru•2h ago•1 comments

Developing our position on AI

https://www.recurse.com/blog/191-developing-our-position-on-ai
208•jakelazaroff•2d ago•65 comments

What is X-Forwarded-For and when can you trust it? (2024)

https://httptoolkit.com/blog/what-is-x-forwarded-for/
25•ayoisaiah•2d ago•8 comments

A Union Pacific-Norfolk Southern combination would redraw the railroad map

https://www.trains.com/trn/news-reviews/news-wire/a-union-pacific-norfolk-southern-combination-would-redraw-the-railroad-map/
54•throw0101c•13h ago•82 comments

CO2 Battery

https://energydome.com/co2-battery/
129•xnx•17h ago•114 comments

Generic Containers in C: Vec

https://uecker.codeberg.page/2025-07-20.html
24•uecker•3d ago•18 comments

Programming vehicles in games

https://wassimulator.com/blog/programming/programming_vehicles_in_games.html
269•Bogdanp•19h ago•61 comments

Women dating safety app 'Tea' breached, users' IDs posted to 4chan

https://www.404media.co/women-dating-safety-app-tea-breached-users-ids-posted-to-4chan/
435•gloxkiqcza•18h ago•555 comments

Researchers value null results, but struggle to publish them

https://www.nature.com/articles/d41586-025-02312-4
114•Bluestein•3d ago•43 comments

Users claim Discord's age verification can be tricked with video game characters

https://www.thepinknews.com/2025/07/25/discord-video-game-characters-age-verification-checks-uk-online-safety-act/
46•mediumdeviation•5h ago•42 comments
Open in hackernews

Vanilla JavaScript support for Tailwind Plus

https://tailwindcss.com/blog/vanilla-js-support-for-tailwind-plus
246•ulrischa•15h ago

Comments

paranoidxprod•15h ago
Would love to know how they went about implementing these. I always find custom elements interesting. I know the guys over at data-star.dev used one to implement their inspector element, but unfortunately that is also behind pro.

I know Lit is used a lot but I’m always looking for new approaches.

gavinray•14h ago
It's explained in the post.
paranoidxprod•14h ago
I mean they mention the built in browser features they use, but make no mention of the actual authoring of the components unless I’m missing something. I’m curious if they’re leaning on existing frameworks for authoring web components or if they’re implementing them from scratch.
cluckindan•14h ago
They don’t mention whether the custom elements are using shadow root and whether it’s open or closed mode.

That has implications for event handling and style encapsulation.

owebmaster•14h ago
it is easy to check using inspect. They are not using shadowDOM which is great.
WorldMaker•14h ago
Since you are asking about other approaches, I've been doing some interesting and simple custom elements with my Knockout-inspired view engine [0]. I built an open source MPA application with a bunch of them [1]. I even gave a brief presentation on it [2] (each PR starting with #2 is a "slide"; I presented it in a "Presentation" profile for VS Code opening the numbered files in order, with the Live Preview extension side-by-side with a simple git alias to jump to "slide" merge commit based on PR number; I thought it went well to show off Developer Experience).

My biggest advice appears to be: remember that the Shadow DOM is optional.

[0] https://worldmaker.net/butterfloat/guides/web-components/

[1] https://github.com/WorldMaker/jocobookclub/tree/main/src/bf

[2] https://github.com/WorldMaker/butterfloat-presentation/pulls...

nodesocket•15h ago
I use DaisyUI in combination with Tailwind but it certainly has some JS backing.
rafram•14h ago
> You can even build something as sophisticated as a custom command palette with Elements

Well, yeah, because they added an `<el-command-palette>` that specifically does that.

vFunct•14h ago
Would this work with DaisyUI components?
nop_slide•12h ago
I don't see why not. I imagine the css classes in the examples are simply for styling, as long as you nest and structure the custom elements themselves correctly I imagine you should be able to style them as you wish.

I have a daisyui project too, so I might try this later.

bikeshaving•14h ago
This is a exciting use-case for custom elements, and probably how tailwind should have been implemented from the start, but it’s hilariously a paid feature?! (https://tailwindcss.com/plus#pricing) Intuitively, I’d expect the custom elements to be free and the framework integrations to cost money.
gavinray•14h ago
Tailwind Plus is a paid collection of UI components and templates.

TailwindCSS itself is meant to be nothing more than a styling tool, like Bootstrap...

bikeshaving•14h ago
The title of the blog post mentions Tailwind Plus so I’m assuming it’s a paid feature. The ambiguity is probably intentional.
Alupis•14h ago
It's not very expensive, all things considered. $299 for a single-user perpetual license (includes all future updates too) or about $1k for a team license[1].

If it saves you a bunch of time writing and maintaining the sort of components they are showing off, probably worth it?

[1] https://tailwindcss.com/plus#pricing

bikeshaving•14h ago
Listen, I’m not against the Tailwind team getting their bag – they worked hard and created an amazing open source library. I just don’t think it’s in the interest of either users or maintainers to put vanilla JavaScript support behind a paywall.

Edit: apparently all framework integrations and the whole library and functionality is behind the same paywall? And regular tailwind is just the css classes/build process that I used to know? Do people not understand how casual readers might be confused about all this?

monkey_monkey•14h ago
The entire component library is behind a paywall...are you saying they should be giving away the vanilla JS version?
yieldcrv•14h ago
You can use vanilla tailwind with vanilla JavaScript
whatever1•13h ago
ChatGPT can just steal it for me!
cschmatzler•13h ago
Yeah I strongly emphasise with them getting their money - the only problem with headless components being behind a paid license is that you cannot build a design system on top of them and open source it.
conradfr•10h ago
Bootstrap has javascript components.
hbn•14h ago
Yeah this seems like an odd thing to paywall. In the web dev world where everything is free, it's a pretty crazy ask to ask people to tie themselves to a UI framework where I guess you're forever paying a subscription just to continue using the framework?

It's like putting if postgres expected you to pay them a monthly fee.

edit: I see now their pricing is one-time perpetual access. Still, I'm genuinely curious how well this model works.

abtinf•14h ago
> I guess you're forever paying a subscription just to continue using the framework

It's a one-time fee for unlimited use and lifetime updates, not a subscription.

benatkin•14h ago
Another hilariously paid feature is https://sso.tax/

It's funny because they're unintuitive to their end users. However, that is deliberate - they are looking for a decision point that comes after, but not too long after, devs have heavily invested in the product.

adamwathan•7h ago
Thanks! It's a paid feature because we just spent around $250,000 developing the library. Couldn't have built it if we were just going to give it away and maintain it forever for free, our engineers are talented people and deservingly well-paid.
gedy•14h ago
Tailwind is fine, but I do find it humorous that they discourage wrapping up tw classes into a component class ala Bootstrap, but they wrap html up like this:

    <el-dropdown class="relative inline-block text-left">
      <button class="inline-flex w-full justify-center gap-x-1.5 rounded-md bg-white px-3 py-2 text-sm ...">
        Options
      </button>
      <el-menu anchor="bottom end" popover class="w-56 origin-top-right rounded-md bg-white shadow-lg ring-1 ring-black/5 transition transition-discrete ...">
      ...
      </el-menu>
    </el-dropdown>

Bootstrap:

    <div class="dropdown">
      <button class="btn btn-secondary dropdown-toggle" type="button">
        Dropdown button
      </button>
      <ul class="dropdown-menu">
        ...
      </ul>
    </div>
(I realize you have full control over looks with TW, but Bootstrap and others have utility classes too for the common stuff.)
nettlin•14h ago
When using Tailwind you’re likely to use something like React components, so your actual code is more likely to look like:

  <Menu>
    <MenuButton>Dropdown button</MenuItems>
    <MenuItems>…</MenuItems>
  </Menu>
which is even better than what Bootstrap provides since you get type safety for component props (and more opportunities for customization than what Bootstrap allows)
notpushkin•14h ago
Type safety is good, but the class soup inside the components is just abysmal. And honestly, more often than not I see it spilling out of the components and onto the page layouts.

Design tokens are the one Tailwind feature I genuinely like. Everything else – kill it with fire. Just use whatever scoped CSS your stack does (<style> in Svelte/Vue, Emotion in React?).

bernawil•13h ago
class soup is what tailwind is. It's terrible because is just abbreviations of css attributes which you still need to know because you'll inevitably fiddle around devtools trying things out.

The only "smart" thing about it is leaning strongly on using rem.

how can it spill out onto the page? it's inline css. The (rare) inline selectors target only descendants.

Truth is that it's winning over because it works best with LLMs. Inline soup works better than looking for styling on different files in the context of the project, so here we are.

notpushkin•6h ago
> how can it spill out onto the page? it's inline css.

Because people are lazy and don’t make a component for everything. And some people are even lazier and don’t make UI components at all. I’ve seen a project where there was a Button component and that’s it. Well, that was vibe coded probably so makes sense.

> Inline soup works better than looking for styling on different files in the context of the project, so here we are.

Only if you have a separate .css. If you do UI components with [insert your favourite CSS-in-JS solution], it stays in the same file. Maybe the proximity to markup within the file is important?

But no, Tailwind has been rising in popularity long before LLMs came along.

DimmieMan•8h ago
The wordiness is a common complaint but TBH it's a minor issue, I do have a growing problem with using tailwind that's hidden just behind that superficial complaint though.

px-3, py-2, bg-red-400 etc. are everywhere in tailwind code and they become more or less undocumented conventions. Technically you can configure them, but practically without unintended side effects on an existing project? And if you make extensive config changes, have you just locked yourself out of the ecosystem?

I don't use bootstrap, but from a brief look at the documentation it seems much more reasonable to diverge from defaults. Looking at themes (https://themes.getbootstrap.com/) it seems more flexible than an average tailwind setup.

gedy•6h ago
I agree, take a look at Bootswatch: https://bootswatch.com

I find it very nice that you can re-theme or brand your app with virtually no code or class changes.

judah•14h ago
Looks like it's done using standards-based web components[0]. The page says these components don't require any existing JavaScript framework; because web component support is built-in to the browser.

Nice to see devs picking up web components.

[0]: https://developer.mozilla.org/en-US/docs/Web/API/Web_compone...

cchance•14h ago
This has been soooooooo long in the making, i remember playing with webcomponents for personal stuff years ago when i didn't care about compat. Good to see mainstream libraries finally picking it up
oaxacaoaxaca•8h ago
https://webawesome.com is now in beta and I couldn't be happier.
shortrounddev2•14h ago
We use web components at the hook for my company's advertising code but I've found them pretty thoroughly disappointing, personally. They make it simple to trigger code execution but their API isn't really that good
spankalee•12h ago
The whole point is to make it simple to trigger code and to be interoperable. Then you write whatever code you want to implement the component.

Web components are not analogous to frameworks because frameworks tightly couple the component interface and lifecycle hooks with the component implementations. Those are properly decoupled in web components and you bring whatever rendering layer you prefer.

hyperbolablabla•12h ago
I remember toying with Polymer circa 2014, for some reason the word "transclusion" jumps into my mind, I remember being excited about it at the time. I barely remember what it means today though.
julik•11h ago
I believe "transclusion" was the Angular 1.x vernacular for "slots", but don't quote me on that ;-)
8n4vidtmkvmk•6h ago
Polymer still haunts me to this day. It never made sense. It was literally designed to be deprecated. It's a big nasty polyfill for web components and it had/has a huge perf overhead. Not to mention it's ergonomics are just bad.
reactordev•8h ago
12 years I’ve been saying this… 12, damn, years. React graduates look at me crazy. Angular devs say it’s not needed anyway. Svelte bros say get bent. I’m so happy that someone is paying attention.

You don’t need a shadow dom, you don’t need rerendering of everything when a simple value changes. You simply need web components and scoped js/ts with vite or whatever rollup you use.

JoeyJoJoJr•4m ago
Can you point to any example projects or a todo list app that shows how modern web component can be utilized.
abtinf•14h ago
The world would be a significantly better place if someone could throw a small mountain of money at the Tailwind folks so that they can stop worrying about money and simply make the full tailwind experience freely available. There are so many lost opportunities for deep integration with other projects.

Kind of like how Jeff Bezos threw a bunch of money at 37signals at some insane valuation, which helped them completely avoid the VC trap.

jw1224•14h ago
The “full Tailwind experience” is already freely available. What “lost opportunities for deep integration” is a frontend CSS framework missing?

Tailwind Plus (the commercial product) is like buying an off-the-shelf template. It’s just a collection of themes and pre-built components — useful for devs who want to get started quickly on a project, but it’s cookie-cutter and can easily be replicated by anyone with Tailwind itself.

vinnymac•13h ago
There are devs who think the currently available HTML elements are all we needed. But there are many more that believe we are missing primitives that Tailwind (and others) is attempting to solve for.

> It’s just a collection of themes and pre-built components

All reusable web components could be described as an optionally themed pre-built component. That's kind of the point.

kyriakos•1h ago
I no longer see value in prebuilt templates since LLMs can put things together sufficiently well for prototyping. Even when using templates before you still needed to customise them. Feels like we are going through a transition period.
brailsafe•14h ago
> There are so many lost opportunities for deep integration with other projects.

What kind of integrations are you thinking of?

abxyz•13h ago
Worried about money? They are already rich beyond their wildest dreams. They are, reasonably, excited about growing and expanding and building a company that does much more, but that is not driven by a need for money, it is driven by their ambition.

edit: I can’t speak for Adam etc., this is just my impression. My impression is that they want to build a business of which tailwind (the open source project) is one part. I think that regardless of money in the bank they would want to have revenue generating projects. Laravel is a good comparable.

_betty_•12h ago
interesting, i had just watched Primeagens Standup with Adam and got the impression they don't do well for money, but a quick google came up with a bunch of posts from Adam himself disclosing some fairly impressive numbers.

No idea if he still does ok from it, but he certainly did at one stage.

adamwathan•7h ago
We are still healthy and profitable but revenue is down about 60% from peak, and continuing to trend down (I think mostly due to AI and open-source alternatives to the things we've historically charged for.)

So things are fine but we do need to reverse the trend which is why we are pretty focused on the commercial side of things right now.

We started a corporate sponsors/partner program recently, and I'm hoping that will earn us enough funding to focus more on the free/open-source stuff, since that's where we create the most value for the world anyways. Fingers crossed!

agloe_dreams•13h ago
> Kind of like how Jeff Bezos threw a bunch of money at 37signals

Honestly, I kinda feel like 37Signals would have been better off with the founders having someone to report to...

moooo99•13h ago
How so? As an outsider, they appear to be a healthy business ans a good employer to work for?
richardlblair•13h ago
Didn't see today's DHH rant about talk therapy?
trevorhinesley•13h ago
Where he encouraged people to lean into intentionality and finding purpose rather than using therapy as a replacement?

I have a diagnosed anxiety disorder and I’ve benefited GREATLY from talk therapy in numerous ways. I’m an advocate for therapy. I simultaneously stand behind his post as a healthy nudge for many.

bluetidepro•12h ago
I think you are confused? Tailwind is already free and open source? These are just components they sale that are pre-made to save you time. It doesn’t take away much at all from the full experience?
devmor•11h ago
From the linked article:

> To pull this off, we built @tailwindplus/elements — a library we're releasing exclusively for Tailwind Plus customers.

This means if you want to use the Tailwind UI components without a Javascript framework, you have to build them all yourself, or pay.

subarctic•11h ago
Fwiw I feel like their components are something I'd be less likely to want to pay for now that you can generate tailwind components so easily with ai. I guess now that I think of it I actually paid for them back when it was called Tailwind UI, but instead of using them I'm just telling claude to generate a UI for me, which has the advantage that there's no licensing issues. It'll be interesting to see how their business does going forward
nikkwong•10h ago
How has shipping high quality products using AI generated tailwind components actually been working for you? I think the problem that I and many others have/had, is that it can certainly build a few components that look good in isolation, but it doesn’t do a good job at maintaining a cohesive theme/idea across many different page sections/components etc. I built blendful [0] to solve this, and sort of lost interest when LLMs became increasingly capable. However, seeing them not making any gains, really, on visual cohesion between sections and components provoked enough excitement to continue working on it this year.

We will see how long it takes for LLMs to make headway in this area specifically.

[0]: https://www.blendful.com

subarctic•3h ago
I'm not there yet, but I wouldn't say I've ever shipped anything with a high quality cohesive frontend. In general though, don't people usually ditch these component libraries and write their own set of components once they reach a certain point?
piyiotisk•14h ago
I would like to know how they find it in comparison to a framework like react
Imustaskforhelp•14h ago
This is the only feature I genuinely want available for tailwind free users too. Sounds really interesting and I can't even try this? That's a shame.

But I understand that funding open source is never easy & I still appreciate tailwind from the bottom of my heart simply because some might hate it for what it is, but I appreciate that I have options to being with (daisy,tailwind etc.)

If anyone who has ever contributed to open source is reading this. Thanks. I am a real frugal person but one day, I want to earn enough money that I can donate to you guys without hesitation and be an open source contributor too.

ayhanfuat•13h ago
I wouldn’t get too excited about it to be honest. At one time they were also supporting Vue but it is now basically abandoned.
dawnerd•13h ago
They also had a figma design library that went away. Kinda silly if you want to get designers on the same page.
GenerWork•13h ago
At this point, the new crop of AI enhanced design tools are basically skipping vector based design and jumping right to code. A lot of them are using ShadCN/UI which is styled using Tailwind, so it's more like designers are somewhat unknowingly getting onto the same page as Tailwind.
croes•13h ago
It’s tailwindcss for a reason
spankalee•12h ago
This is Vue support.

With so many frameworks out there it's infeasible to build custom wrappers for them all. With web components they can build once, and work everywhere. It's only up to the frameworks to make sure they have great web components support (which just means great HTML support).

skrebbel•12h ago
Vue has great web component support. Even React 19 (finally!) does.

Web components are a mess but this is a great application of them: shipping reusable components that work in all frameworks. It's the one and only killer application of web components.

Frankly I'm surprised they're marketing this as "for vanilla javascript" and not as a "now supports all frameworks" type positioning.

ayhanfuat•12h ago
That’s not really the point. Tailwind UI depends on Headless UI. Headless UI had both Vue and React packages. The Vue package was abandoned. Many are in the process of finding workarounds for the issues or moving to another library. This new shiny thing can be used in Vue, sure. I know better now to not build anything on top of it though.
bitbasher•12h ago
Seems like this is a move to remove alpinejs from the custom block elements in tailwindcss plus? I don't see alpinejs in the code snippets anymore.

edit:

Confirmed, they removed alpine from their copy/pastable code. Now you see:

<!-- Include this script tag or install `@tailwindplus/elements` via npm: -->

<!-- <script src="https://cdn.jsdelivr.net/npm/@tailwindplus/elements@1" type="module"></script> -->

This sucks because I have been using alpine and now I can't copy paste the examples ~_~

victorbjorklund•12h ago
Finally!
felipemesquita•12h ago
A love letter their rails users indeed. Congratulations to the tailwind team for shipping this! Disclosure
megaman821•12h ago
I am not a Tailwind user but I am a big fan of these "headless" web components. I have been using home-grown web components for tabs, modals, drawers, dropdown, tooltips, toasts and selects they implement functionality and accessibility with minimal styling. I use them across different projects and different solutions (Django templates, Vue, React, vanilla HTML) without any problems.
ricardobeat•11h ago

    <el-dialog-panel class="mx-auto block max-w-3xl transform overflow-hidden rounded-xl bg-white shadow-2xl ring-1 ring-black/5 transition-all group-data-closed/dialog:scale-95 group-data-closed/dialog:opacity-0 group-data-enter/dialog:duration-300 group-data-enter/dialog:ease-out group-data-leave/dialog:duration-200 group-data-leave/dialog:ease-in">
Lovely. Verbosity aside, now on top of knowing CSS you need to learn another hierarchical system within class names.
monkey_monkey•11h ago
Yes I agree - it's nice to be able to see exactly what's happening without needing to dive into a rats nest of fragile CSS cascades.
skydhash•11h ago
Why not use the web inspector? That’s usually the quickest way to see which style is applied to an element.
paradox460•10h ago
People would rather have to parse out a big dumb list of classes than look at the actual list of what properties affect something, with a clear ability to drill down into them. Its madness, akin to carpenters giving up hammers, preferring to use glue, because they hit their thumb a few times by accident
skydhash•7h ago
Based on the code I've seen, including written by old me, it seems more like designing the architecture of the CSS styles (and sticking to it) is something people don't like to do. Tailwind is just a tool that is nicer than using the style attribute on the element.

I strongly prefer "button is-primary is-fullwidth" over the long list of tailwind classes.

paradox460•5h ago
Same. And all the arguments about using component libraries, like the op, fall flat when you realize components can have scope local styles
vitaflo•9h ago
This is literally a rats nest of css cascades.
softwreoutthere•4h ago
Its atomic though, which is easier for some to reason about. I use devtools.
omnimus•43m ago
It is not. Utility all classes have basic specificity of 0-1-0. There is no cascade just order of classes that all have same specificity.
Marciplan•11h ago
kinda feels like jQuery, I like
oleggromov•10h ago
I came to comment that at least something good happened to the otherwise cursed project... but you made me reconsider.
tomnipotent•8h ago
Groups are great. It lets a child element activate an effect on a parent element.

    <div id="parent" class="group"><a class="group/hover:bg-black">Hover</a></div>
This eliminates the need for JS for a wide range of things.
reactordev•8h ago
But at what cost? If it’s not a CSS builtin, it’s going to use JS - it may not be something you care about, but it will be there. There’s no other way.
lemonberry•7h ago
I believe it's regular old css. The :has() pseudo class.

https://developer.mozilla.org/en-US/docs/Web/CSS/:has

reactordev•6h ago
Nice
MrJohz•5h ago
It's not even :has, it's just how child selectors in CSS have always worked.

    // Not actually needed, here
    // for competition
    .group {}

    // Child selector
    .group:hover group\/hover\:bg-black {
      background-color: black; 
    }

    // Which is essentially the same as
    .group:hover child {
      background-color: black; 
    }
luckylion•1h ago
That doesn't affect the parent (.group) based on the child though.
omnimus•46m ago
Atleast in Tailwind that’s what it should do. You hover over card (.group) and some elements inside change.
MrJohz•7m ago
No, but `group` doesn't affect the parent in Tailwind. You put `group` in the parent to mark it, and then use the `group/...` syntax to apply different properties to the child, depending on the different states of the parent. This doesn't require `:has`.

I don't think Tailwind has a built-in `:has` tool, but I suspect it would be easy to add one as a custom class.

omnimus•52m ago
Isn’t it funny that in a thread about how Tailwind is bad and people should learn real css… people also think css selectors require JS?
MrJohz•11m ago
:has doesn't require JS, I think the previous poster was just confused about which selector `group` is equivalent to.
mcintyre1994•3h ago
Tailwind compiles all the inline stuff to CSS, and this works in plain CSS. It’s just allowing you to define that inline, which you wouldn’t be able to do with inline styles.

It’s the same as how they enable media queries for example, they’re not using JS just plain CSS, but they’re making it available with these inline classes.

emmanueloga_•8h ago
In real projects I typically group the classes in a way that makes it easier to read, something like this:

    <div class={tw(
      "block",
      "transform transition-all",
      "bg-white ring-1 ring-black/5 rounded-xl shadow-2xl",

      "max-w-3xl mx-auto overflow-hidden",

      "group-data-closed/dialog:opacity-0",
      "group-data-closed/dialog:scale-95",

      "group-data-enter/dialog:duration-300",
      "group-data-enter/dialog:ease-out",

      "group-data-leave/dialog:duration-200",
      "group-data-leave/dialog:ease-in"
    )}>
        ...
    </div>
I currently do this manually but it would be nice to have some tooling to automate that kind of format.
Brajeshwar•5h ago
I do this to this day, when I’m writing manual vanilla CSS. I group spacings, fonts, texts, borders etc together so it is easier for me to debug without using too many tools.
gnarbarian•6h ago
We need a total and complete stop to all front end development until we figure out what the hell is wrong with them.
yoz-y•5h ago
Some people (I suspect a lot of young and motivated developers) think that UI development should be easy and elegant.

But consider that a UI is 100% state management and side effects (so fundamentally imperative and asynchronous). On top of that it takes about three revisions for any tool to require bespoke display of something (everybody has an opinion). They also bring a layout engine which is best expressed in constraints.

And somehow we are trying to shoehorn all this into a functional paradigm.

pjmlp•5h ago
Mostly is, with native toolkits, Web should have stayed for hypermedia documents, but here we are.

I have used and programmed enough kinds of UIs, since I got coding into that Timex 2068 in 1986.

AstroBen•6h ago
I just can't fathom how someone can look at this and think "yeahhhh thats some good clean code". How did tailwind get so popular? Learn plain CSS. It's really good now
Jaygles•6h ago
I've worked in many different FE codebases with a variety of CSS "strategies".

This sort of thing is objectively ugly and takes a minute to learn. The advantages of this approach I found is two-fold

1. You can be more confident that the changes you are making apply to only the elements you are interested in changing

You are modifying an element directly. Contrast with modifying some class that could be on any number of elements

2. You can change things around quite quickly

Once you're well familiar with your toolset, you know what to reach for to quickly reach a desired end state

iambateman•5h ago
Agree, and to add…the “component” still needs to exist somewhere in the system for tailwind to make sense.

No one is writing a long paragraph of styles for _every_ button in their app.

nojs•4h ago
> No one is writing a long paragraph of styles for _every_ button in their app.

Very much not true. LLMs love doing this!

yxhuvud•2h ago
Yes, many most definitely do just that.
AstroBen•5h ago
This is one of the least elegant ways to scope CSS though.. you may as well just write inline CSS

I like BEM personally. "navbar__item" scopes the styling to the nav item

> Once you're well familiar with your toolset, you know what to reach for to quickly reach a desired end state

This also applies to plain CSS, doesn't it?

The big value add that Tailwind brought isn't their utility classes IMO - it's their philosophy around having a design system of consistent coloring and spacing. I actually borrowed that for my own projects. It taught me to be a lot more diligent about specifying the system upfront. Put it in CSS variables and re-use those

omnimus•1h ago
You can’t use inline css it’s not at all the same.

Inline css

1. Can’t use media queries (responsive design).

2. Gets you to specificity hell - you loose ability to cascade.

3. Does not follow any system or reuse of values.

4. Values can’t be centrally changed. Utility clases are still classes - when you change class value it changes everywhere where the class is used.

5. Its verbose. Utility classes can have multiple css rules.

Conceptually it might seem that inline css is similar but thats just feeling. Functional css (utility classes) are about composing classes with simpler (one purpose) behaviour together to create complex behaviour.

eviks•3h ago
1. Aren't there good tools that can list all the elements a style would be applied to so that you can pick and change only the ones affecting the element you need?
pjmlp•5h ago
No idea, thankfully I am doing mostly backend and devops stuff, so I don't need to care.

If I do something myself, I keep using bootstrap, as it is good compromise for those of us not honoured with CSS mastery.

Ironically I have no issues making great looking UIs with native toolkit.

In 5 years the tailwind craziness will be replaced by the next shiny CSS of the month.

har777•4h ago
I like how tailwind provides scoping automatically. But in projects already having a build system I use css modules. Writing pure CSS is so much nicer but please don't make me manage class names myself.
input_sh•1h ago
Can I copy some random HTML+CSS snippet from the internet and be sure that it'll look exactly the same in my project and that no existing CSS is going to overwrite it?

I'm never gonna argue learning proper CSS wouldn't be better, but Tailwind is by far the path of least resistance for someone that has no interest in writing frontend for a living. It's like putting legos together, it requires very little thought to get from nothing to a decently looking website.

pjmlp•1h ago
Fashion driven development, and magpie developer references come to mind.
omnimus•1h ago
Tailwind goes into crazy extreme so people can copy paste whole complex components and they work. That’s why you can dunk on these verbose examples.

This is not how custom functional css codebase looks. In custom projects you change the system/configuration to fit the project. You create your own utilities for example you wont have “text-lg sm:text-xl font-semibold tracking-tight” but will have class “font-heading-2”. Similarly you will create button/input classes that have you basic styles.

Generally you start with just simple utility classes inside html and go from there and where it make sense or its too complex you separate to more complex class. You end up with short css file that only has these special components and none of the basic stuff.

For most elemets it ends up like “flex justify-center gap-4”. In BEM i have to invent “nav-secondary__header” put it in correct place and hate myself when i need to change it to “flex justify-beween”.

Tailwind popularised functional css but is also aimed at masses/noobs. Somehow some of those concepts also resonated with some experienced users.

Brajeshwar•5h ago
I have a feeling that Tailwind started with a good intention to be a utility classes CSS framework, akin to “Bourbon on Steroids”, but people began to accept and use their prototype/sample/example codes way better than they had intended, and they ran with it.

I stumbled on Tailwind in 2018 and introduced it to a team looking to revamp a pretty massive project. I remember that the initial proposal I made was to treat it like Bourbon[1] and write classes that build on Tailwind’s utilities. That way, you can still have `.button`, `.button-primary`, and `.button-primary__accent` etc without the cryptic classes in the HTML.

However, after reading Tailwind, the team found it much easier to write the pre-built classes and stack them as they progressed. And it worked; if I don’t care about how the code is written, things were consistent. It reminds me of “Pixel Perfection” before the responsive design era, when things looked as designed in Photoshop and printed for clients during presentations.

1. https://www.bourbon.io

k4runa•1h ago
Tachyons CSS was also around at the same time but Tailwind had simpler naming conventions so instead of `br4` you had `rounded-lg`.

1. https://tachyons.io/

omnimus•59m ago
Dont’t forget Tailwind is popular because people can copy paste chunks of HTML. Selling premade HTML is how Tailwind is funded.

It is also pretty good configurable utility framework but that is secondary and new version 4 is worse at customisation.

So people are moving to https://unocss.dev/ with tailwind naming conventions.

davidw•4h ago
It's like Forth and CSS had some kind of hideous offspring.
gloosx•2h ago
Oh yeah, when I open a typical big project with Tailwind I always love to see some:

  <div class="group relative w-full max-w-md mx-auto bg-white dark:bg-gray-900 border border-gray-200 dark:border-gray-800 rounded-2xl shadow-lg p-6 md:p-8 transition-all duration-300 hover:shadow-xl hover:border-blue-500 dark:hover:border-blue-400">
  <div class="flex items-center justify-between mb-4">
    <h3 class="text-lg sm:text-xl font-semibold text-gray-800 dark:text-white tracking-tight group-hover:text-blue-600 dark:group-hover:text-blue-400 transition-colors">Team Settings</h3>
  </div>
  <p class="text-sm sm:text-base text-gray-600 dark:text-gray-400 leading-relaxed mb-6">Manage your team permissions, invites, roles, and integrations here. Changes apply instantly across all team workspaces.</p>
  <div class="flex flex-col sm:flex-row gap-4 sm:justify-end">
    <button class="px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-200 bg-gray-100 dark:bg-gray-700 hover:bg-gray-200 dark:hover:bg-gray-600 rounded-md transition-colors">Cancel</button>
    <button class="px-4 py-2 text-sm font-medium text-white bg-blue-600 hover:bg-blue-700 rounded-md shadow-sm focus:outline-none focus:ring-2 focus:ring-blue-400 dark:focus:ring-blue-300 transition-all duration-150">Save Changes</button>
    </div>
  </div>
philipp-spiess•2h ago
We actually ended up adding the custom animation-specific data props to all dialog specific custom elements before the release, so the group-*/dialog is no longer necessary but I forgot to update the code in the post.

I doubt that changes your mind, though.

combyn8tor•10h ago
This is great. Last time I looked into this UI component world I was surprised the popular UI libraries weren't all 'headless' at their base. Web components have been around a long time now. What was stopping this approach?

There are so many framework specific libraries like shadcn, and the community set about building half finished conversions for different frameworks like Vue, which are always several iterations behind and don't really work properly. They have their own version of the docs and it all relies on a specific version of Vue and a specific version of Tailwind and whatever else. It's an abomination.

Start with headless UI as a base and then build wrappers for specific frameworks if you really feel the need. But the wrappers should be syntax sugar only and linked directly to the base library.

I'm sure it's all more complicated than that but a man can dream.

chrismorgan•6h ago
Put simply: if you’re using something like React, Vue, Svelte, whatever, then Web Components are strict overhead in terms of bundle size and runtime overhead. And when there’s impedance mismatch between the two worlds, which I hear is particularly common in React (can’t attest it personally, I don’t use React), you have to compromise on functionality or ergonomics, or else do fancier bindings, at which point why even bother with Web Components?

It will also commonly not play nicely with some more advanced aspects of the frameworks, like server-side rendering will probably suffer (depending on how exactly things are done).

In a world where React is dominant and you’re wanting to use React yourself, targeting Web Components just doesn’t make sense.

Then “headless” makes it worse. The more comprehensive implementations have a lot of overhead.

combyn8tor•3h ago
Here's my put simply:

We've got some UI components built with html, CSS and JavaScript. They use web standards.

We want to add them into web frameworks that are built in JavaScript. They are built for html, CSS and JavaScript.

No need to overcomplicate things.

And for a universal component library I'll happily accept 7kb extra overhead in my 4mb React slop website

jlukic•10h ago
Working on a new version of semantic ui for authoring ui with web components and signals based reactivity without a compilation step.

https://next.semantic-ui.com/

Has Tailwind support out of the box, just had to mod oxide to get non threaded wasm support in the browser

https://next.semantic-ui.com/examples/tailwind

mmcclure•9h ago
I love seeing a mainstream/popular project embracing web components. We've been working on a web components project for media players[1] for a while for the same reasons:

    Instead of being coupled to a specific JavaScript framework, these custom elements work anywhere you can use a <script> tag
But...React is still the elephant in the room here. Maybe TW is just in a different world if they're truly just anticipating folks using this via a `<script>` tag, but if not, very curious how they're going to deal with some of the web component (WC) stuff we've dealt with, like:

- Despite signals/promises, React 19 didn't add full support for WC. React uses a diff algorithm for reconciliation. There are some rough edges for any "complex value" cases in the incomplete solution for 19's WC support with client vs server side rendering. This results in us being required to use 'use client' for parts of our component architectures, meaning WC providers aren't able to take full advantage of SSR.

- WCs are async loading, which in combination with React can have a negative impact on performance for things like core web vitals (and the dreaded cumulative layout shift).

- WCs are just different from React patterns. Each WC creates a DOM element, but React components don't have to, which just inherently means different shapes of code.

- React focus management libraries don't play nice with WCs. We've talked to multiple devs/companies that were excited about/using WCs that backed out because of cross-ecosystem complexities like this.

- React Native is, uh....a whole thing.

On a somewhat separate note...one of my complaints about TW historically has been that it feels like "just classes" (great!), yet requires a build step (oh...). I'm a little confused to see them leaning into `<script>` tags given that, so am I just missing something?

[1] https://github.com/muxinc/media-chrome

jaesonaras•7h ago
I still can't justify using Tailwind. It's not that I don't like it, but I find CSS does everything I need and more, and I do some pretty complex styling and animations in CSS.

I just find that at some point, Tailwind gets in the way and I revert back to plain CSS. TW invariably then just becomes another style src in the HTML.

gnarbarian•6h ago
when a front end developer encounters a minor inconvenience he can't wait to avoid it by creating a series of larger ones.
joduplessis•3h ago
I've been working with TW more lately and I must admit - there is a convenience factor there that is really nice - and it abstracts a lot of the finicky design system thinking.

But, if you're building any long-term product, investing in your own design system + component library will put many many more miles on the board in terms of DX, flexibility, aesthethic language, dependency footprint, etc.

pzo•2h ago
Wish there was something like that for React Native or even Lynx. Then I would happily pay for plus bundle.
dandano•36m ago
Tailwind plus has saved me 100s of hours for my rails based development. JS was the only thing missing for me, so stoked for this.