---
layout: default
title: Getting started
slug: getting-started
lead: "An overview of Bootstrap, how to download and use, basic templates and examples, and more."
base_url: "../"
---
Download Bootstrap
Bootstrap has a few easy ways to quickly get started, each one appealing to a different skill level and use case. Read through to see what suits your particular needs.
Compiled CSS, JS, and fonts
The fastest way to get Bootstrap is to download the precompiled and minified versions of our CSS, JavaScript, and fonts. No documentation or original source code files are included.
The folks over at NetDNA graciously provide CDN support for Bootstrap's CSS and JavaScript. Just use these Bootstrap CDN links.
{% highlight html %}
{% endhighlight %}
Compiling Bootstrap's LESS files
If you work with Bootstrap's uncompiled source code, you need to compile the LESS files to produce usable CSS files. For LESS compilation, we only officially support Recess, which is Twitter's CSS hinter based on less.js.
What's included
Within the download you'll find the following directories and files, logically grouping common assets and providing both compiled and minified variations.
Once downloaded, unzip the compressed folder to see the structure of (the compiled) Bootstrap. You'll see something like this:
This is the most basic form of Bootstrap: precompiled files for quick drop-in usage in nearly any web project. We provide compiled CSS and JS (bootstrap.*), as well as compiled and minified CSS and JS (bootstrap.min.*). Fonts from Glyphicons are included, as is the optional Bootstrap theme.
jQuery required
Please note that all JavaScript plugins require jQuery to be included, as shown in the starter template.
Basic template
Start with this basic HTML template, or modify these examples.
We hope you'll customize our templates and examples, adapting them to suit your needs.
Copy the HTML below to begin working with a minimal Bootstrap document.
{% highlight html %}
Bootstrap 101 Template
Hello, world!
{% endhighlight %}
Examples
Build on the basic template above with Bootstrap's many components. See also Customizing Bootstrap for tips on maintaining your own Bootstrap variants.
Starter template
Nothing but the basics: compiled CSS and JavaScript along with a container.
Grids
Multiple examples of grid layouts with all four tiers, nesting, and more.
Jumbotron
Build around the jumbotron with a navbar and some basic grid columns.
Narrow jumbotron
Build a more custom page by narrowing the default container and jumbotron.
Navbar
Super basic template that includes the navbar along with some additional content.
Static top navbar
Super basic template with a static top navbar along with some additional content.
Fixed navbar
Super basic template with a fixed top navbar along with some additional content.
Sign-in page
Custom form layout and design for a simple sign in form.
Sticky footer
Attach a footer to the bottom of the viewport when the content is shorter than it.
Sticky footer with navbar
Attach a footer to the bottom of the viewport with a fixed navbar at the top.
Build a toggleable off-canvas navigation menu for use with Bootstrap.
Carousel
Customize the navbar and carousel, then add some new components.
Non-responsive Bootstrap
Easily disable the responsiveness of Bootstrap per our docs.
Bootstrap theme
Load the optional Bootstrap theme for a visually enhanced experience.
Disabling responsiveness
Bootstrap automatically adapts your pages for various screen sizes.
Here's how to disable this feature so your page works like in this non-responsive example.
Steps to disable page responsiveness
Omit the viewport <meta> mentioned in the CSS docs
Override the width on the .container for each grid tier with a single width, for example width: 970px !important; Be sure that this comes after the default Bootstrap CSS. You can optionally avoid the !important with media queries or some selector-fu.
If using navbars, remove all navbar collapsing and expanding behavior.
For grid layouts, use .col-xs-* classes in addition to, or in place of, the medium/large ones. Don't worry, the extra-small device grid scales to all resolutions.
You'll still need Respond.js for IE8 (since our media queries are still there and need to be processed).
This disables the "mobile site" aspects of Bootstrap.
Bootstrap template with responsiveness disabled
We've applied these steps to an example. Read its source code to see the specific changes implemented.
Bootstrap 3 is not backwards compatible with v2.x. Folks looking to upgrade to v3 should use this section as a general upgrade guide. We've outlined some of the major changes and provided tables that highlight key changes. For an overview, read the announcement blog post.
Major class changes
Reference table for classes that have changed between v2.x and v3.0.
Bootstrap 2.x
Bootstrap 3.0
.container-fluid
.container
.row-fluid
.row
.span*
.col-md-*
.offset*
.col-md-offset-*
.brand
.navbar-brand
.nav-collapse
.navbar-collapse
.nav-toggle
.navbar-toggle
.btn-navbar
.navbar-btn
.hero-unit
.jumbotron
.icon-*
.glyphicon .glyphicon-*
.btn
.btn .btn-default
.btn-mini
.btn-xs
.btn-small
.btn-sm
.btn-large
.btn-lg
.alert-error
.alert-danger
.visible-phone
.visible-xs
.visible-tablet
.visible-sm
.visible-desktop
.visible-md
.hidden-phone
.hidden-xs
.hidden-tablet
.hidden-sm
.hidden-desktop
.hidden-md
.input-small
.input-sm
.input-large
.input-lg
.checkbox.inline.radio.inline
.checkbox-inline.radio-inline
.input-prepend.input-append
.input-group
.add-on
.input-group-addon
.thumbnail
.img-thumbnail
ul.unstyled
.list-unstyled
ul.inline
.list-inline
.muted
.text-muted
.text-error
.text-danger
.table .error
.table .danger
.bar
.progress-bar
.bar-*
.progress-bar-*
What's new
We've added a few new elements and changed some existing ones. Here's their new or updated classes.
The following elements have been dropped or changed in v3.
Element
Removed from 2.x
3.0 Equivalent
Form actions
.form-actions
N/A
Search form
.form-search
N/A
Fluid container
.container-fluid
.container (no more fixed grid)
Fluid row
.row-fluid
.row (no more fixed grid)
Navbar inner
.navbar-inner
N/A
Navbar vertical dividers
.navbar .divider-vertical
N/A
Dropdown submenu
.dropdown-submenu
N/A
Tab alignments
.tabs-left.tabs-right.tabs-below
N/A
Additional notes
We've made many underlying changes in v3 that are not immediately apparent. Base classes, key styles, and behaviors have been adjusted for flexibility and our mobile first approach.
Text-based form controls are now 100% wide. Wrap inputs inside <div class="col-*"></div> to control input widths.
.badge no longer has contextual (-success,-primary,etc..) classes.
.btn must also use .btn-default to get the "default" button.
.container and .row are now fluid (percentage-based).
Images are no longer responsive by default. Use .img-responsive for fluid <img> size.
The icons, now .glyphicon, are now font based. They also require a base and icon class (e.g. .glyphicon .glyphicon-asterisk).
Modal markup has changed significantly. The .modal-header, .modal-body, and .modal-footer sections now get wrapped in .modal-content and .modal-dialog for improved mobile styling and behavior.
JavaScript events are namespaced. For example, to handle the modal "show" event, use 'show.bs.modal'. For tabs "shown" use 'shown.bs.tab', etc..
For more information on upgrades and code snippets from the community check out Bootply.
Browser support
Bootstrap is built to work best in the latest desktop and mobile browsers, meaning older and less advanced browsers might receive a less stylized, though fully functional, version of certain components.
Supported browsers
Specifically, we support the latest versions of the following:
Chrome (Mac, Windows, iOS, and Android)
Safari (Mac and iOS only, as Windows has more or less been discontinued)
Firefox (Mac, Windows)
Internet Explorer
Opera (Mac, Windows)
Unofficially, Bootstrap should look and behave well enough in Chromium for Linux and Internet Explorer 7, though they are not officially supported.
Internet Explorer 8 and 9
Internet Explorer 8 and 9 are also supported, however, please be aware that some CSS3 properties and HTML5 elements are not fully supported by these browsers. In addition, Internet Explorer 8 requires the use of respond.js to enable media query support.
Feature
Internet Explorer 8
Internet Explorer 9
border-radius
Not supported
Supported
box-shadow
Not supported
Supported
transform
Not supported
Supported, with -ms prefix
transition
Not supported
placeholder
Not supported
Visit Can I use... for details on browser support of CSS3 and HTML5 features.
Internet Explorer 8 and box-sizing
IE8 does not fully support box-sizing: border-box; when combined with min-width, max-width, min-height, or max-height. For that reason, as of v3.0.1, we no longer use max-width on .containers.
IE Compatibility modes
Bootstrap is not supported in the old Internet Explorer compatibility modes. To be sure you're using the latest rendering mode for IE, consider including the appropriate <meta> tag in your pages:
Internet Explorer 10 doesn't differentiate device width from viewport width, and thus doesn't properly apply the media queries in Bootstrap's CSS. To address this, you can optionally include the following CSS and JavaScript to work around this problem until Microsoft issues a fix.
In the latest Safari for Mac, its rendering engine has a little trouble with the long decimal places of our .col-*-1 grid classes, meaning if you have 12 individual columns you'll notice they come up short compared to other rows of columns. We can't do much here (see #9282) but you do have some options:
Add .pull-right to your last grid column to get the hard-right alignment
Tweak your percentages manually to get the perfect rounding for Safari (more difficult than the first option)
We'll keep an eye on this though and update our code if we have an easy solution.
Modals and mobile devices
Overflow and scrolling
Support for overflow: hidden on the <body> element is quite limited in iOS and Android. To that end, when you scroll past the top or bottom of a modal in either of those devices' browsers, the <body> content will begin to scroll.
Virtual keyboards
Also, note that if you're using inputs in your modal – iOS has a rendering bug that doesn't update the position of fixed elements when the virtual keyboard is triggered. A few work arounds for this include transforming your elements to position: absolute or invoking a timer on focus to try to correct the positioning manually. This is not handled by Bootstrap, so it is up to you to decide which solution is best for your application.
Browser zooming
Page zooming inevitably presents rendering artifacts in some components, both in Bootstrap and the rest of the web. Depending on the issue, we may be able to fix it (search first and then open an issue if need be). However, we tend to ignore these as they often have no direct solution other than hacky workarounds.
Third party support
While we don't officially support any third party plugins or add-ons, we do offer some useful advice to help avoid potential issues in your projects.
Box-sizing
Some third party software, including Google Maps and Google Custom Search Engine, conflict with Bootstrap due to * { box-sizing: border-box; }, a rule which makes it so padding does not affect the final computed width of an element. Learn more about box model and sizing at CSS Tricks.
Depending on the context, you may override as-needed (Option 1) or reset the box-sizing for entire regions (Option 2).
{% highlight css %}
/* Box-sizing resets
*
* Reset individual elements or override regions to avoid conflicts due to
* global box model settings of Bootstrap. Two options—individual overrides and
* region resets—are available as plain CSS and Less.
*/
/* Option 1A: Override a single element's box model via CSS */
.element {
-webkit-box-sizing: content-box;
-moz-box-sizing: content-box;
box-sizing: content-box;
}
/* Option 1B: Override a single element's box model via Bootstrap Less mixin */
.element {
.box-sizing(content-box);
}
/* Option 2A: Reset an entire region via CSS */
.reset-box-sizing,
.reset-box-sizing *,
.reset-box-sizing *:before,
.reset-box-sizing *:after {
-webkit-box-sizing: content-box;
-moz-box-sizing: content-box;
box-sizing: content-box;
}
/* Option 2B: Reset an entire region via custom Less mixin */
.reset-box-sizing {
&,
*,
*:before,
*:after {
.box-sizing(content-box);
}
}
.element {
.reset-box-sizing();
}
{% endhighlight %}
Accessibility
Bootstrap follows common web standards, and with minimal extra effort, can be used to create sites that are accessibile to those using AT.
Skip navigation
If your navigation contains many links and comes before the main content in the DOM, add a Skip to content link immediately after your opening <body> tag. (read why)
When nesting headings (<h1> - <h6>), your primary document header should be an <h1>. Subsequent headings should make logical use of <h2> - <h6> such that screen readers can construct a table of contents for your pages.
Bootstrap is released under the Apache 2 license and is copyright {{ site.time | date: "%Y" }} Twitter. Boiled down to smaller chunks, it can be described with the following conditions.
It allows you to:
Freely download and use Bootstrap, in whole or in part, for personal, company internal or commercial purposes
Use Bootstrap in packages or distributions that you create
It forbids you to:
Redistribute any piece of Bootstrap without proper attribution
Use any marks owned by Twitter in any way that might state or imply that Twitter endorses your distribution
Use any marks owned by Twitter in any way that might state or imply that you created the Twitter software in question
It requires you to:
Include a copy of the license in any redistribution you may make that includes Bootstrap
Provide clear attribution to Twitter for any distributions that include Bootstrap
It does not require you to:
Include the source of Bootstrap itself, or of any modifications you may have made to it, in any redistribution you may assemble that includes it
Submit changes that you make to Bootstrap back to the Bootstrap project (though such feedback is encouraged)
Customizing Bootstrap is best accomplished when you treat it as another dependency in your development stack. Doing so ensures future upgrades are as easy as possible while also familiarizing yourself to the intricacies of the framework.
Once you've downloaded and included Bootstrap's CSS into your templates, you can move on to customizing the included components. To do so, create a new stylesheet (LESS, if you like, or just plain CSS) to house your customizations.
Compiled or minified?
Unless you plan on reading a good chunk of the compiled CSS, go with the minified. It's the same code, just compacted. Less bandwidth is good, especially in production environments.
From there, include whatever Bootstrap components and HTML content you need to get your template setup. It's best to have a rough idea in mind of modifications to make and content to include, so be sure to spend a brief amount of time on that before moving on.
Customizing components
You can customize components to varying degrees, but most fall into two camps: light customizations and complete visual overhauls. Luckily, plenty examples of both are available.
We define light customizations as mostly surface layer changes, things like a color and font changes to existing Bootstrap components. A great example of this is the the Twitter Translation Center (coded by @mdo). Let's look at how to implement the custom button we wrote for this site, .btn-ttc.
Instead of using the provided Bootstrap buttons, which only require just one class to start, .btn, we'll add our own modifier class, .btn-ttc. This will give us a slightly custom look with minimal effort.
{% highlight html %}
{% endhighlight %}
In the custom stylesheet, add the following CSS:
{% highlight css %}
/* Custom button
-------------------------------------------------- */
/* Override base .btn styles */
/* Apply text and background changes to three key states: default, hover, and active (click). */
.btn-ttc,
.btn-ttc:hover,
.btn-ttc:active {
color: white;
text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
background-color: #007da7;
}
/* Apply the custom-colored gradients */
/* Note: you'll need to include all the appropriate gradients for various browsers and standards. */
.btn-ttc {
background-repeat: repeat-x;
background-image: linear-gradient(top, #009ED2 0%, #007DA7 100%);
...
}
/* Set the hover state */
/* An easy hover state is just to move the gradient up a small amount. Add other embellishments as you see fit. */
.btn-ttc:hover {
background-position: 0 -15px;
}
{% endhighlight %}
Customizing Bootstrap components takes time, but should be straightforward. Look to the source code often and duplicate the selectors you need for your modifications. Placing them after the Bootstrap source makes for easy overriding without complication. To recap, here's the basic workflow:
For each element you want to customize, find its code in the compiled Bootstrap CSS. Copy and paste the selector for a component as-is. For instance, to customize the navbar background, just snag .navbar.
Add all your custom CSS in a separate stylesheet using the selectors you just copied from the Bootstrap source. No need for prefacing with additional classes or using !important here.
Rinse and repeat until you're happy with your customizations.
Going beyond light customizations and into visual overhauls is just as straightforward as the above custom button. For a site like Karma, which uses Bootstrap as a CSS reset with heavy modifications, more extensive work is involved, but well worth it in the end.
Alternate customization methods
While not recommended for folks new to Bootstrap, you may use one of two alternate methods for customization. The first is modifying the source .less files (making upgrades super difficult), and the second is mapping source LESS code to your own classes via mixins. For the time being, neither of those options are documented here.
Removing potential bloat
Not all sites and applications need to make use of everything Bootstrap has to offer, especially in production environments where bandwidth literally becomes a financial issue. We encourage folks to remove whatever is unused with our Customizer.
Using the Customizer, simply uncheck any component, feature, or asset you don't need. Hit download and swap out the default Bootstrap files with these newly customized ones. You'll get vanilla Bootstrap, but without the features *you* deem unnecessary. All custom builds include compiled and minified versions, so use whichever works for you.
