@getbootstrap

Official account for Bootstrap, a toolkit providing simple and flexible HTML, CSS, and JS for popular UI components and interactions. Tweets by @mdo.

 San Francisco, CA
getbootstrap.com
Joined September 2011
  • Tweets2.1K
  • Following22
  • Followers518K
121Media
Closing out the year with a big new release, v5.3.0-alpha1! Get your hands on the pre-release with color modes, expanded color palette, new utilities, and more! blog.getbootstrap.com/2022/1… Wishing everyone an amazing holiday break and a Happy New Year! Catch y’all in 2023 🎉🥂💜
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Latest iteration on our internal tooling for managing hundreds of issues, PRs, and discussions. Months ago, I had @conductor_build & Claude scan our old issues and PRs, organize by group, learn my voice, and then respond. Long story short, we don't ship v6 without new tools.
Julien Déramond@JulienDeramondOct 15
This is the new dashboard @mdo and I use to triage everything open on Bootstrap. Agents analyze each issue, PR and discussion, draft the answer, and prepare a fix when needed. We still make every call. blog.getbootstrap.com/2026/1…
The Triage dashboard for twbs/bootstrap. On the left, status filters (Action, Decision, Waiting, Not analysed) above a list of issues and pull requests sorted quickest first, each with an ease score out of 10. On the right, a "Pick the next item" panel suggests starting with pull request #42948, ease 10. Planned outcomes are blurred.

ALT The Triage dashboard for twbs/bootstrap. On the left, status filters (Action, Decision, Waiting, Not analysed) above a list of issues and pull requests sorted quickest first, each with an ease score out of 10. On the right, a "Pick the next item" panel suggests starting with pull request #42948, ease 10. Planned outcomes are blurred.

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Bootstrap retweeted
Mark Otto
@mdoOct 9
One of my favorite changes in Bootstrap 6 is token maps. They’re Sass maps for CSS variables that get emitted on component class or `:root`, meaning no matter how you customize Bootstrap (in Sass or compiled CSS), you’re just writing CSS. Stoked we came up with this solution.
Mark Otto
@mdoOct 8
Absolutely huge day today—Bootstrap 6 Alpha 1 has arrived! Refreshed design, updated docs, new components, new Sass/CSS approach, more modern frontend stack, updated tooling. getbootstrap.com

Bootstrap

Powerful, extensible, and feature-packed frontend toolkit. Build and customize with Sass, utilize prebuilt grid system and components, and bring projects to life with powerful JavaScript plugins.

getbootstrap.com
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🎉 Bootstrap 6 Alpha 1 is here! getbootstrap.com For v5 folks, we'll be doing a v5.x release soon once we catch our breath. In the meantime, enjoy the new v6 hotness, new blog, and new icons, too!

Bootstrap

Powerful, extensible, and feature-packed frontend toolkit. Build and customize with Sass, utilize prebuilt grid system and components, and bring projects to life with powerful JavaScript plugins.

getbootstrap.com
Mark Otto
@mdoOct 8
Absolutely huge day today—Bootstrap 6 Alpha 1 has arrived! Refreshed design, updated docs, new components, new Sass/CSS approach, more modern frontend stack, updated tooling. getbootstrap.com

Bootstrap

Powerful, extensible, and feature-packed frontend toolkit. Build and customize with Sass, utilize prebuilt grid system and components, and bring projects to life with powerful JavaScript plugins.

getbootstrap.com
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Here's the blog post about the initial release: blog.getbootstrap.com/2026/1….

Bootstrap 6 Alpha

Today we’re releasing the first alpha version of Bootstrap 6, a major overhaul to the project that modernizes and expands one of the most prolific open source…

blog.getbootstrap.com
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Bootstrap turned 15! To celebrate, I'm happy to share that the first v6 alpha is coming soon! Buttoning up a few things and writing a lengthy blog post to highlight the new Sass+CSS approach, new components & plugins, new standards, new theming, and more. Stay tuned.
Web Design Museum
@WebDesignMuseumAug 19
On August 19, 2011, Web developers Mark Otto and Jacob Thornton of Twitter began creating the CSS framework Bootstrap in mid-2011. The framework was originally developed to help maintain the HTML/CSS and JavaScript code consistency in Twitter applications.
Bootstrap, from Twitter website in 2011

ALT Bootstrap, from Twitter website in 2011

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Eric Simons
@EricSimonsAug 20
The nostalgia seeing this homepage is crazy I remember copy pasta’ing the ever living crap outta those three basic templates at the bottom of the page In many ways, bootstrap kicked off the modern SV dev scene as we know it. Design system w/ variables, components, etc. It took the ecosystem the following 9 years of the decade to fully flesh these core ideas out with things like React, storybook, etc @fat @mdo are goated. Also, honored to have stackblitz powering the live examples on the bootstrap site the past years!
Web Design Museum
@WebDesignMuseumAug 19
On August 19, 2011, Web developers Mark Otto and Jacob Thornton of Twitter began creating the CSS framework Bootstrap in mid-2011. The framework was originally developed to help maintain the HTML/CSS and JavaScript code consistency in Twitter applications.
Bootstrap, from Twitter website in 2011

ALT Bootstrap, from Twitter website in 2011

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It belongs in a museum!
Web Design Museum
@WebDesignMuseumAug 19
On August 19, 2011, Web developers Mark Otto and Jacob Thornton of Twitter began creating the CSS framework Bootstrap in mid-2011. The framework was originally developed to help maintain the HTML/CSS and JavaScript code consistency in Twitter applications.
Bootstrap, from Twitter website in 2011

ALT Bootstrap, from Twitter website in 2011

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Lots of happenings lately for v6's development! One new idea is to move from component-specific modifiers to global ones. Take this example—use `.theme-primary` on all components, or on a parent, and even override where needed. Also, spot the new button variants? 👀
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These theme modifiers are generated from the new theme colors map we've been building. Looks a little wild, but the use of CSS's `light-dark()` color function makes these also immediately adaptive to OS color modes.
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Oh, and we have new colors! First, there are more named colors in here—like violet, amber, lime, brown, and pewter. And there are more tints and shades—025, 050, 950, and 975 values are here for every color.
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Would you prefer a v5 breaking change to support Sass modules (drop Node Sass, modify imports, iron out a few customizing issues)? Or a jump right to v6?
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🚢 Holy ship! v5.3.6 is here and while technically only a patch release, it's a massive update. We've officially migrated our docs off Hugo and onto @astrodotbuild. Massive undertaking by @JulienDeramond. Onto v5.4.0 pending any more urgent fixes. blog.getbootstrap.com/2025/0…

Bootstrap 5.3.6

Bootstrap v5.3.6 was just released to migrate our documentation to Astro from Hugo. Also included are a few bug fixes and documentation updates.

blog.getbootstrap.com
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Just a heads up—we have two big efforts underway for Bootstrap with migrating the docs to Astro for our next v5.3 release and early v6 development. Astro unblocks us from dropping Node Sass, which will allow us to focus on Dart Sass and those deprecation warnings. Coming soon!
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See the Astro migration PR here: github.com/twbs/bootstrap/pu…

Docs: migration from Hugo to Astro by julien-deramond · Pull Request #41251 · twbs/bootstrap

This PR is the result of a long process of migration from Hugo to Astro. It's based on a previous work made with @HiDeoo a long time ago at #38319. I've restarted from there and spe...

github.com
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We just published a quick v5.3.5 to fix a floating labels regression in Firefox due to a bug in a dependency. Docs rolling out now. github.com/twbs/bootstrap/re… Have a good weekend!

Release v5.3.5 · twbs/bootstrap

Hot fix for a regression from upstream in Autoprefixer. What's Changed Fix floating labels rendering on Firefox by @julien-deramond in #41347 Bump to v5.3.5 by @mdo in #41348 Full Changelog: ...

github.com
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Bootstrap v5.3.4 is live. Get the details at blog.getbootstrap.com/2025/0…. Please enjoy this fresh little drop while we keep hammering away on migrating from Hugo to Astro for our docs, dropping Node Sass so we can fix some Dart Sass deprecation issues, and of course v6.

Bootstrap 5.3.4

Bootstrap v5.3.4 is here with several bug fixes and a load of documentation updates. Here are a handful of highlights from the CSS and JS changes:

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👀 github.com/twbs/bootstrap/pu… youtube.com/watch?v=araU0fZj…

v6-dev by mdo · Pull Request #41236 · twbs/bootstrap

Yes, it's happening! Here's what's happened so far: High level Dropped extraneous grid, reboot, and utilities bundles for now (potentially will bring them back) Browser s...

github.com
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Heads up for those on older versions of Bootstrap—checkout the @herodevs fixes for the following security vulnerabilities.
HeroDevs
@herodevs11 Jul 2024
HeroDevs has patched three medium-risk vulnerabilities in Bootstrap 3 and 4: 🚨CVE-2024-6484: XSS in Bootstrap 3 Carousel. 🚨CVE-2024-6485: XSS in Bootstrap 3 Button. 🚨CVE-2024-6531: XSS in Bootstrap 4 Carousel. For more details: bit.ly/3Lpb46M
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It's early to be thinking about v6 more holistically, but it's still fun to capture easy changes we really can't make until then on @pierrecomputer for now. For example, a breaking change like moving ratio helpers to utilities. pierre.co/share/c61e6401-9f8…
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