Typographic scale

The entire typographic grid is based on two Less variables in our variables.less file: @baseFontSize and @baseLineHeight. 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.

Example body text

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.

Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Donec sed odio dui.

h1. Heading 1

h2. Heading 2

h3. Heading 3

h4. Heading 4

h5. Heading 5

h6. Heading 6

Emphasis, address, and abbreviation

Element	Usage	Optional
`<strong>`	For emphasizing a snippet of text with important	None
`<em>`	For emphasizing a snippet of text with stress	None
`<abbr>`	Wraps abbreviations and acronyms to show the expanded version on hover	Include optional `title` attribute for expanded text Use `.initialism` class for uppercase abbreviations.
`<address>`	For contact information for its nearest ancestor or the entire body of work	Preserve formatting by ending all lines with `<br>`

Using emphasis

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: Feel free to use  and  in HTML5, but their usage has changed a bit.  is meant to highlight words or phrases without conveying additional importance while  is mostly for voice, technical terms, etc.

Example addresses

Here are two examples of how the <address> tag can be used:

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

Full Name
first.last@gmail.com

Example abbreviations

Abbreviations with a title attribute have a light dotted bottom border and a help cursor on hover. This gives users extra indication something will be shown on hover.

Add the initialism class to an abbreviation to increase typographic harmony by giving it a slightly smaller text size.

HTML is the best thing since sliced bread.

An abbreviation of the word attribute is attr.

Blockquotes

Element	Usage	Optional
`<blockquote>`	Block-level element for quoting content from another source	Add `cite` attribute for source URL Use `.pull-left` and `.pull-right` classes for floated options
`<small>`	Optional element for adding a user-facing citation, typically an author with title of work	Place the `<cite>` around the title or name of source

To include a blockquote, wrap <blockquote> around any HTML as the quote. For straight quotes we recommend a .

Include an optional  element to cite your source and you'll get an em dash — before it for styling purposes.

<blockquote>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis.</p>
  <small>Someone famous</small>
</blockquote>

Example blockquotes

Default blockquotes are styled as such:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis.
Someone famous in Body of work

To float your blockquote to the right, add class="pull-right":

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante venenatis.
Someone famous in Body of work

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 class="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>

Lorem ipsum dolor sit amet
Consectetur adipiscing elit
Integer molestie lorem at massa
Facilisis in pretium nisl aliquet
Nulla volutpat aliquam velit
Faucibus porta lacus fringilla vel
Aenean sit amet erat nunc
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.

Horizontal description

<dl class="dl-horizontal">

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.

Typography Headings, paragraphs, lists, and other inline type elements