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Base Normalized content across all browsers.

Normalize

Responsive provides lots of building blocks that are specifically designed to speed up your development by boilerplating common components from normalized styles.

The base CSS for this comes from Normalize.css; an open-source project by Nicolas Gallagher and Jonathan Neal.

In their own words:

Normalize.css is a small CSS file that provides better cross-browser consistency in the default styling of HTML elements. It's a modern, HTML5-ready, alternative to the traditional CSS reset.

Typography

Responsive does not add any additional styles to basic typographical elements such as <p/>. Header tags and other elements conform to cross-browser normalized standards.

Header Element Default Dimensions

h1 element

 
font-size: 2em;
margin: .67em 0;

h2 element

 
font-size: 1.5em;
margin: .83em 0;

h3 element

 
font-size: 1.17em;
margin: 1em 0;

h4 element

 
font-size: 1em;
margin: 1.33em 0;
h5 element
 
font-size: .83em;
margin: 1.67em 0;
h6 element
 
font-size: .67em;
margin: 2.33em 0;

<hr/> elements have been tweaked slightly though to allow developers to more easily style them. For example:

Inline Typographical Elements

q element inside a q element example
small element example
span element example
strong element example
sub element example
sup element example
var element example

cite element example
del element example
dfn element and dfn element with title examples
em element example
i element example
ins element example
mark element example
abbr example
ruby example

Visibility helpers.

These helpers allow you to toggle the visibility of elements as the viewport scales. Em values are calculated at the browser body default of 16px = 1em.

Visible Example: Green means visible

Hidden Example: Red means hidden

Extra Visibility Helpers

These extra utility classes help you perform addition visibility tasks.

.hidden
Hides an element from both screen-readers and browsers.
.visuallyhidden
Hides an element visually, but has it available for screen readers.
.invisible
Hides an element visually and from screen readers, but maintain layout.
.ir
Hides an elements text so that a background image can be used instead; requires the height of the element to be set via CSS to work. Useful for logos.

Layout Helpers

Responsive also comes bundled with utility classes help you layout elements within the grid columns.

Floating Classes

Push or pull elements floating them to the extremes of their immediate parent. Add the class .clearfix to the parent element to contain floats without resorting to using presentational markup.

.push

.pull

Heads Up!

Both .push and .pull have .push/.pull-{grid range} and .push/.pull-{grid range}-only variants for each grid range.

Display Classes

The following classes are available for changing the layout of elements

.block
Changes an elements display style to block.
.inline-block
Changes an elements display style to inline-block.
.inline
Changes an elements display style to inline.

Heads Up!

.block, .inline-block, and .inline have {display type}-{grid range} and {display type}-{grid range}-only variants for each grid range.