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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
s element example
small element example
span element example
strong element example
sub element example
sup element example
u 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

Responsive 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 Helpers

These extra utility classes help you perform common tasks.

.clearfix
Contain floats without resorting to using presentational markup.
.push-left
Floats an element to the far left of its parent container.
.push-right
Floats an element to the far right of its parent container.
.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. Useful for logos.
.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.
.fade-out
Changes an elements opacity to 0 fading it out with a CSS animation.
.fade-in
Changes an elements opacity to 1 fading it in with a CSS animation.