User blog comment:GangBunTu/Changing Main Page/@comment-24196526-20140109141624/@comment-24373936-20140110003634

Actually, you've used some while creating Template:Episode. Css is the library of styles, bundled as classes. class="toccolours" style="width:19em; float:right; margin:0 0 0.5em 1em; text-align:left; border:solid 1px #DEB45B; padding:2px;" Without css, we are forced to type a lot of style= to apply the same effect on different locations. Further, if we decide to change the look-n-feel, we'll be forced to change a lot (again).

Css simplify these changes while maintaining consistent look-n-feel in this wikia. But it is a doouble-edge sword; reckless editing may wreak havoc.

Some references:
 * JS &amp; CS Cheatsheet
 * Collection of samples
 * Expert mode - css for mobile

-- edit: fixed the 1st link --