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Official account for Bootstrap, a toolkit providing simple and flexible HTML, CSS, and JS for popular UI components and interactions. Tweets by @mdo .
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Joined September 2011
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Pinned Tweet
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!
Wishing everyone an amazing holiday break and a Happy New Year! Catch y’all in 2023 🎉🥂💜
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We never stopped believing, and hope you didn’t either! Bootstrap 4.0.0 has finally landed!
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Bootstrap 5's first alpha has landed! We've dropped jQuery, dropped IE10 and IE11 support, added a new utilities API, redesigned our docs, improved our grid, redesigned our forms, and oh hey we're sporting a new logo, too!
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🎉🎂 Happy birthday, Bootstrap!
Ten years ago today, we shipped the very first version of Bootstrap. What an absolutely incredible ride it’s been. Thanks to all the maintainers, contributors, and everyone who built with Bootstrap along the way.
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One more time, we're gonna celebrate—Bootstrap 5 has officially arrived! New accordion and offcanvas components, no more jQuery, no more IE, RTL support, new utilities and utilities API, new examples, new docs, and so much more!
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As we start thinking about v5, what should we remove from Bootstrap? Already dropping jQuery and very likely IE10/11 in our next major version.
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Hold the line, shipping isn’t always on time—except today! We just released Bootstrap v4.3.0 with tons of new utilities, optional responsive font sizes, improved CSS compilation, and more. Also includes a preview of what’s next!
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Finally exploring our own SVG icon library for v5! If all goes well, we'll be using these for our own components and open sourcing them alongside our next major update :D.
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Bootstrap v4.5.0 is out with new user-select utilities, zipped and downloadable examples, dependency updates, tons of bug fixes, and a refreshed homepage!
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It’s the final beta! Our last breaking changes are in—and they’re big ones!—and v4 stable is just around the corner.
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Bootstrap 4.1 is out—and with a new docs URL to mark the occasion! Tons of new utilities, bug fixes, and docs updates.
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Bootstrap Icons v1.0.0 is officially out! Get your hands on our first stable release, complete with 1,120 icons (up from 200 in our first alpha!) all ready for you to use and customize. Huge labor of love and a ton of fun to work on—hope you enjoy! :D
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Beta 2 is here—and with two tickets to Bootstrap theming paradise! 😂
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🎉 Alpha 6 is here! Dropped IE9, went full flexbox, updated navbar, more grid features, better utilities, and more.
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Bootstrap v4.1.2 is out!
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Bootstrap 5.3.0 is here!
🌚 Dark mode support
🎨 Custom color modes support
🌈 Extended color palette
🔗 New link helpers and utilities
🐛 Bug fixes, docs updates, and more
Read the blog post to learn more and how to use the new color mode features.
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Bootstrap v4.4.0 is here! New responsive containers, new `.row-cols` classes for responsive card decks, and new functions and mixins—not to mention dozens of bug fixes and docs updates.
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🎉 Bootstrap v5.2.0-beta1 has arrived! This is a massive update with so much to love: redesigned docs w/ search and version picker, CSS variables for every component, responsive offcanvas, new helpers and utilities, a blog redesign, and more!
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Holy crap, the Beta 3 project has no more open issues or PRs to review! Should have it all ready to share late next week, and a stable release to start 2018. Only like three years in the making!
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Holy guacamole, we just shipped Bootstrap v3.4.0! Not a typo—some essential XSS fixes, a new gutter-less grid option, improved build tools, and more. Oh, and v4.2 drops in the coming weeks!
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Happy holidays y’all—Bootstrap v4.2.1 is out! Hiccups with npm aside, this is a huge release featuring new components like toasts, spinners, and custom switch controls alongside new utilities and dozens of bug fixes.
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Some good news bad news if you hadn’t heard: we dropped IE11 support in our upcoming v5 release. This is largely motivated by how long major versions take to stabilize. If you need IE at all, use v4—we have a v4.4.2 in the works, too.
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Ayyy, now that flexbox is standard in v4, we have a new navbar coming. Demo: . PR:
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Bootstrap 5 Beta 3 is here! We’ve added a new offcanvas component, four new examples, numbered list groups, added new Sass docs to each component, fixed bugs, and more!
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Bootstrap v4.1.1 is out with some solid bug fixes for y’all. Next up, v4.1.2!
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We’re making progress on v5’s development, just some final big-ish changes before our first alpha. Follow along with the v5 project board: .
We’re also stubbed out what’s coming in subsequent alphas, so check out the other project boards, too!
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Got hyped on v5 ideas and started consolidating our form styles. Planning to merge default and custom elements for checks, radios, switches, selects, and more to reduce our file size.
Let us know what you think!
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Don't stop us now—Bootstrap Icons Alpha 5 is here! A brand new SVG sprite, nearly 300 new icons, and dozens of improvements to existing icons, docs, and build tooling.
See what's new and find out what's coming in our next release, v1.0.0 stable!
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🎉 Bootstrap 5.1.0 is here! We’ve got experimental CSS Grid support, offcanvas in navbars, new placeholders component, horizontal collapse, stack helpers, tons of CSS variables, updated bg-* and text-* utilities, four new examples, and more!
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Alpha 3 is out for Bootstrap 4! Updated grid, more flexbox, tons of forms updates, and more from 1,000+ commits!
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Woohoo, Bootstrap v4.1.3 is out with a browserslist npm fix, form control improvements, UMD-ready JavaScript, and more!
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Folks asking about browser support: use the right version, don’t blindly update because we shipped a new major release.
Need IE8/9? Use v3.
Need IE10/11? Keep using v4.
Don’t need IE10/11? Consider v5 whenever it comes :).
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Heyo, there's a new file input coming to v5! Using .form-control on a file input replaces the .form-file input, made entirely in CSS and without need for any JS. Fantastic PR by our very own
@Martijn_Cuppens
!
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Double ship day! Introducing Bootstrap Icons, our very first open source SVG icon set designed to work with Bootstrap and any other project you might have. Read all about our first alpha release!
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Bootstrap v4.6.0 is out with an all new backend (now built on Hugo like v5!), custom classes for tooltips/popovers, navbar scrolling, and more!
Next up, v5 Beta 2!
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Holy crap—Alpha 5 is here! New CSS builds, custom grid gutters, navbar updates, utilities galore, and more!
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Before we get to our first stable beta, I have to ask: what if we dropped IE9 support from v4?
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😍 We have a redesign coming to our docs with our next release—new side nav, new code syntax colors, redesigned header (with responsive offcanvas!), an improved version picker, an updated homepage, and even a more vibrant Bootstrap Purple™️!
Lots to wrap up, but 🔜!
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Dark mode support is (finally 😅) coming to Bootstrap 5! While it’s still a couple releases away, I’m excited about some new ideas and approaches for global theme changes thanks to CSS variables. Lots to do, but feel free to follow along!
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Aww yeah! Say hello to the next major release of Bootstrap with the first v4 alpha!
http://t.co/pyBI7J4Jt2
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Friendly heads up that in the next couple weeks we’ll be shipping our second Bootstrap 5 alpha, as well as a patch release to v4 to chip away at some more bugs and optimizations. Follow along with our project boards if you’d like!
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We've just released Bootstrap v3.4.1 and v4.3.1 to patch a XSS vulnerability in our tooltip and popover plugins in both versions. Please read our blog post an updated docs for details, and update at your earliest convenience.
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Bootstrap v5.3.1 is here with some fixes for color mode and components, plus some documentation updates that include adding search to the homepage. Next up is v5.3.2 and then most likely v5.4.0.
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Floating labels have graduated from docs example to a full-fledged component in v5 Alpha 3! We’ve tweaked the behavior and added support for selects and textareas! Take a sneak peek: .
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Bootstrap 5 Beta 1 is here with RTL (and some renamed classes to better support it), new toast positioning, Popper.js v2, namespaced data attributes, states in our utilities API, and more. From here out, no more breaking changes!
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It's more than a feeling, it's a new Bootstrap 4 alpha release! Find out what's new and download the latest: .
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Any way you want it, our 10 brand new premium Bootstrap Themes will help you build it!
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Bootstrap 5 Alpha 3 is here!
New accordion, new utilities, docs search keyboard shortcut, new color functions, JS bugfixes, floating labels, new file input, a fix for input group validation rounded corners, and more!
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Some awesomely powerful positioning utilities coming in our next v5 alpha release thanks to an amazing contributor! Here are a few examples of them in action.
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Bootstrap 5 Beta 2 is signed, sealed, delivered—and now yours!
Lots of Popper improvements, especially for dropdowns, some great new Sass documentation for utilities (components are next!), and tons of small feature improvements and fixes.
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Starting 2021 right—we’ll be adding over 60 new icons in our next release! Some good ones in here, including some of our oldest requests. Stay tuned!
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Thought 500 icons was enough? We’re already past 600 with this latest pull request, and I still have a growing backlog of icons to design. Expect another huge alpha release in the coming weeks.
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Bootstrap v5.3.2 is here with a fix for Dart Sass, color mode updates, and more!
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One of our contributors has a longstanding PR ready to add responsive font sizes to Bootstrap that scale to your device’s viewport—see .
Take it for a spin on this docs staging instance: .
Tell us what you think!
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Got some new Bootstrap Icons coming your way soon! Tons of new media controls, plus (finally!) a small set of social icons.
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Beta 2 drops later this week! Tons of updates in store for you, most of them around improving our docs and some important popover/dropdown fixes. See ya real soon!
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Bootstrap Icons v1 stable is almost done—we've redrawn ~400 icons so far to improve consistency and vector paths. We've also filled out more icon variations, adding almost 100 new icons. That brings us to over 1,100 total icons!
Follow along in the PR: .
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Nothing like stepping into a two year old code base with the v3-dev branch and seeing everything still works great!
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👋🏼 We’ve made the difficult decision to shut down our community Slack and transition all conversations to the Discussions tab of our main GitHub repo by Aug 31, 2022. Slack just doesn’t scale to a community of 44,000+ members. Moderation, spam control, and cost are all factors.
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And one more thing… we're stoked to announce our Official Bootstrap Themes!
http://t.co/KK0K1puh9U
http://t.co/diY937Fe8J
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Refactored and simpler carousel coming to v4 this week! Check the pull request for what’s changing: .
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Time for a weekend release—today we shipped our second alpha release of Bootstrap Icons featuring over 100 new icons! We’ve made a few bug fixes along the way, too, and tweaked some existing ones. Read the blog post to learn more.
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We’re calling it on v3—just closed all the open issues and PRs for it so we can focus 100% on v4. More details at .
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Fun fact: you can easily get equal-height columns in Bootstrap with some `display: table;` action.
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v4 Alpha 4 is here to fix all those build errors, CSS bugs, and docs inconsistencies from our last release.
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New border-radius utilities coming at ya! We've updated .rounded-* classes to include .rounded-{0-3} for more control over your rounded corners.
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The stats around Bootstrap this last decade are staggering.
👩💻 2.5 billion docs page views
📦 394 million npm downloads
💎 50 million RubyGems downloads
⬇️ 57 million NuGet downloads
🌎 Used by 22% of the internet
Absolutely mind-blowing. 🤯
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Sorry for the delay in getting v4.1 out the door, it’s coming early next week! Check the ship list at for details on what’s coming.
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While v5.2.0 still has to ship first, v5.3.0’s dark mode updates are looking hella fresh. 🥳 Lots to refine, but very happy with where we’re taking things with CSS variables in v5.
Dark mode support is (finally 😅) coming to Bootstrap 5! While it’s still a couple releases away, I’m excited about some new ideas and approaches for global theme changes thanks to CSS variables. Lots to do, but feel free to follow along!
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CSS grid layout fans—doing a little research.
What kind of support are you hoping for in Bootstrap? Classes for creating columns/rows, spanning columns/rows, default grid templates? Something else entirely?
Examples of what you like are also welcome!
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Having way too much fun making these icons—up from 16 to 58! Using Sketch for now, might migrate to Figma. Need to figure out automation of SVG code (optimization, classes, attribute linting, etc). Any icon tips would be rad—I've never used a pen tool this much in my life.
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Bootstrap v5.0.2 has finally arrived with our new custom `divide()` function to fix the Sass division warnings, ability for `.col-*` classes to override `.row-cols-*`, several CSS and JS bugfixes, and docs improvements. On to v5.1.0!
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Bootstrap v3.3.7 is out today, now featuring support for jQuery 3!
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We built this job board—for the millions of developers using Bootstrap! Introducing Bootstrap Jobs.
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We've landed new and updated font utilities for v5 Alpha 3. New font-size (.fs-*) utilities were added that match HTML headings, and font-weight/-style utilities have updated class names for more consistency.
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She's a killer release! We just published our fourth alpha of Bootstrap Icons with 140 new icons including a suite of calendar options, shopping carts and bags, tons of new arrow options, and a handful of optimizations.
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v5.1.0 will add experimental, opt-in support for CSS Grid as an alternative grid system. Tons of power packed in there! Already merged and in `main`. Check out the preview docs and give it a go before the official release!
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Bootstrap v5.2.1 is here!
✅ Modified focus styles for buttons to improve touch behavior
🐛 Fixed a bug with calc and postcss-values-parser
🫣 Fixed manual tooltips
👉🏻 Fixed modal clicks and events
…and lots more!
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Bootstrap Icons v1.4.0 is out with over 60 new weather icons, some long awaited vertical alignment improvements, and more docs/tooling improvements. Check the images below for a preview of the new icons and the updated alignment.
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Heyo, Bootstrap v4.5.1 is here with a handful of bug fixes and documentation improvements! Biggest bugs this addresses is with some busted grid and flex behaviors, so have a look and update to the latest. (Be sure to read to the end for an update on v5!)
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We’re working on our next release, v5.3.0, and have had a ton of fun exploring theme updates to better support dark mode and other color modes. Here’s a sneak peak from the dark mode PR (see ). Let us know what you think!
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In case you missed it, over the weekend we shipped our fifth and final alpha release for Bootstrap Icons! Next up will be our v1 stable release. Read the blog post to learn more.
Don't stop us now—Bootstrap Icons Alpha 5 is here! A brand new SVG sprite, nearly 300 new icons, and dozens of improvements to existing icons, docs, and build tooling.
See what's new and find out what's coming in our next release, v1.0.0 stable!
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Over 500 icons so far! We'll have ~400 for our next release, then the rest in subsequent releases. Woo!
Been balancing the "constant on" of working from home by working on open source whenever I can, and I just crossed over 500 icons made for Bootstrap Icons! Getting there!
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For the first time since Bootstrap v1, we’ve got dark dropdowns! Coming to v5 alpha 2, add `.dropdown-menu-dark` to opt into dark dropdowns anywhere—buttons, navbars, you name it!
Check the PR:
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Bootstrap Icons v1.8.0 is here with plenty of heart icons for Valentine’s Day, dozens of new filetype icons, and more!
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Bootstrap Icons v1.2.0 is out with social icons, new media icons, and icon fonts!
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Some of our team’s maintainers are taking time off over the next two weeks, so we'll be slow to respond to issues and PRs. We're also holding up v5 alpha 2. While it bums me out, the health and wellbeing of our team matters more :).
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Bootstrap v5.1.1 has landed! We’ve shipped a handful of fixes to some CSS variables we added in our last release, fixed some JS bugs, and more. Next up is v5.1.2, then v5.2.0!
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Happy Thursday—we just shipped v5.0.1 with some bugfixes and docs fixes. Thanks to the folks who shared feedback and helped resolve issues in this one!
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Just shipped dark mode support to the Bootstrap Icons (with a new v1.10.3 release and better homepage perf!) and Bootstrap Blog sites. Super fast and easy, woo! 🎉
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!
Wishing everyone an amazing holiday break and a Happy New Year! Catch y’all in 2023 🎉🥂💜
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🎉 Coming soon in our next v5.3.0 pre-release, icon links! They’re a new helper to quickly align a Bootstrap Icon (or any other icon) with your text.
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Bootstrap Icons v1.6.0 has arrived! 30+ new icons, several bug fixes and redrawn glyphs, new `.scss` stylesheet for icon fonts, new Sass variables for font and path, plus Composer support!
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Do you remember, the 29th night of September!? We do, because we just shipped Bootstrap 5 Alpha 2!
Dark dropdowns, dark carousel, new close button, new utilities, updated helpers, and more. Read the blog post for details!
.
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📦 🎉 Bootstrap Icons v1.9.0 has landed!
We’ve added 140+ new icons, taking us over 1,800 total. New icons include transportation, brand, numbers and letters, and many more. Read more in the post: .
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ICYMI: we shipped the first Bootstrap 4 alpha release today—and Official Bootstrap Themes!
http://t.co/pyBI7J4Jt2
http://t.co/KK0K1puh9U
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Woohoo! Bootstrap v3.3.2 is out with dozens of bug fixes, docs improvements, and more.
http://t.co/J3GsjyUniS
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