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Cascading Style Sheets is one of the primary technologies used in the web. CSS provides the style/appearance aspect of your HTML.
{{Feature
|explains= CSS
}}
== Example: mobile layout with 2 columns ==
A change to use percentages and 'em's instead of hard pixel widths or font size would achieve a more fluid layout. Basically, always use em for font size. Only use px when you know the exact dimensions of something (like setting a negative margin for a graphic)
To really get what you want (a responsive layout that is designed to work well in print and a variety of devices), you should use the 'media' selector, in combination with 'media queries' <ref>good list of various approaches at https://gist.github.com/dustinboston/3867516 </ref>
CSS like the following would be good:
<source lang="css">
@media (min-width: 55em)
{
.main
{
float: left;
width: 65%;
margin-right: 5%;
margin-bottom: 1em;
}
.aside
{
float: left;
width: 30%;
margin-bottom: 1em;
}
}
</source>
Note how both columns are floated "left" which means that when your math or the browser isn't broken and the percentages <=100% they are side by side. This side-by-side layout is only applied to devices that have a screen width of 880 pixels <ref> 55em translates to 880px for the browser default font size of 16px. https://css-tricks.com/css-font-size/</ref>
Example at http://maxdesign.com.au/jobs/css-layouts/12-example-layout-two-full/ and source at
https://github.com/russmaxdesign/example-layout-two-full
{{References}}
[[Category:Web Development]]
