Bootstrap, from Twitter

Bootstrap is a toolkit from Twitter designed to kickstart development of webapps and sites.
It includes base CSS and HTML for typography, forms, buttons, tables, grids, navigation, and more.

Nerd alert: Bootstrap is built with Less and was designed to work out of the gate with modern browsers in mind.

Headings & copy

A standard typographic hierarchy for structuring your webpages.

The entire typographic grid is based on two Less variables in our variables.less file: @basefont and @baseline. The first is the base font-size used throughout and the second is the base line-height.

We use those variables, and some math, to create the margins, paddings, and line-heights of all our type and more.

h1. Heading 1

h2. Heading 2

h3. Heading 3

h4. Heading 4

h5. Heading 5
h6. Heading 6

Example paragraph

Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nullam id dolor id nibh ultricies vehicula ut id elit.

Example heading Has sub-heading…

Misc. elements

Using emphasis, addresses, & abbreviations

<strong> <em> <address> <abbr>

When to use

Emphasis tags (<strong> and <em>) should be used to indicate additional importance or emphasis of a word or phrase relative to its surrounding copy. Use <strong> for importance and <em> for stress emphasis.

Emphasis in a paragraph

Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Maecenas faucibus mollis interdum. Nulla vitae elit libero, a pharetra augue.

Note: It's still okay to use <b> and <i> tags in HTML5 and they don't have to be styled bold and italic, respectively (although if there is a more semantic element, use it). <b> is meant to highlight words or phrases without conveying additional importance, while <i> is mostly for voice, technical terms, etc.

Addresses

The <address> element is used for contact information for its nearest ancestor, or the entire body of work. Here are two examples of how it could be used:

Twitter, Inc.
795 Folsom Ave, Suite 600
San Francisco, CA 94107
P: (123) 456-7890

Note: Each line in an <address> must end with a line-break (<br />) or be wrapped in a block-level tag (e.g., <p>) to properly structure the content.

Abbreviations

For abbreviations and acronyms, use the <abbr> tag (<acronym> is deprecated in HTML5). Put the shorthand form within the tag and set a title for the complete name.

Blockquotes

<blockquote> <p> <small>

How to quote

To include a blockquote, wrap <blockquote> around <p> and <small> tags. Use the <small> element to cite your source and you'll get an em dash &mdash; before it.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis dapibus posuere velit aliquet.

Dr. Julius Hibbert
<blockquote>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis dapibus posuere velit aliquet.</p>
  <small>Dr. Julius Hibbert</small>
</blockquote>

Lists

Unordered <ul>

  • Lorem ipsum dolor sit amet
  • Consectetur adipiscing elit
  • Integer molestie lorem at massa
  • Facilisis in pretium nisl aliquet
  • Nulla volutpat aliquam velit
    • Phasellus iaculis neque
    • Purus sodales ultricies
    • Vestibulum laoreet porttitor sem
    • Ac tristique libero volutpat at
  • Faucibus porta lacus fringilla vel
  • Aenean sit amet erat nunc
  • Eget porttitor lorem

Unstyled <ul.unstyled>

  • Lorem ipsum dolor sit amet
  • Consectetur adipiscing elit
  • Integer molestie lorem at massa
  • Facilisis in pretium nisl aliquet
  • Nulla volutpat aliquam velit
    • Phasellus iaculis neque
    • Purus sodales ultricies
    • Vestibulum laoreet porttitor sem
    • Ac tristique libero volutpat at
  • Faucibus porta lacus fringilla vel
  • Aenean sit amet erat nunc
  • Eget porttitor lorem

Ordered <ol>

  1. Lorem ipsum dolor sit amet
  2. Consectetur adipiscing elit
  3. Integer molestie lorem at massa
  4. Facilisis in pretium nisl aliquet
  5. Nulla volutpat aliquam velit
  6. Faucibus porta lacus fringilla vel
  7. Aenean sit amet erat nunc
  8. Eget porttitor lorem

Description dl

Description lists
A description list is perfect for defining terms.
Euismod
Vestibulum id ligula porta felis euismod semper eget lacinia odio sem nec elit.
Donec id elit non mi porta gravida at eget metus.
Malesuada porta
Etiam porta sem malesuada magna mollis euismod.

Code

<code> <pre>

Pimp your code in style with two simple tags. For even more awesomeness through javascript, drop in Google's code prettify library and you're set.

Presenting code

Code, blocks of or just snippets inline, can be displayed with style just by wrapping in the right tag. For blocks of code spanning multiple lines, use the <pre> element. For inline code, use the <code> element.

Element Result
<code> In a line of text like this, your wrapped code will look like this <html> element.
<pre>
<div>
  <h1>Heading</h1>
  <p>Something right here...</p>
</div>

Note: Be sure to keep code within <pre> tags as close to the left as possible; it will render all tabs.

<pre class="prettyprint">

Using the google-code-prettify library, your blocks of code get a slightly different visual style and automatic syntax highlighting.

<div>
  <h1>Heading</h1>
  <p>Something right here...</p>
</div>

Download google-code-prettify and view the readme for how to use.

Inline labels

<span class="label">

Call attention to or flag any phrase in your body text.

Label anything

Ever needed one of those fancy New! or Important flags when writing code? Well, now you have them. Here's what's included by default:

Label Result
<span class="label">Default</span> Default
<span class="label success">New</span> New
<span class="label warning">Warning</span> Warning
<span class="label important">Important</span> Important
<span class="label notice">Notice</span> Notice