appearance

The appearance property is used to display an element using a platform-native styling based on the users’ operating system’s theme.

.thing {
   -webkit-appearance: value;
   -moz-appearance:    value;
   appearance:         value;
}

This is starting to be unprefixed, which is great because …

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Sara Cope on (Updated on )

Fold Out Popups

A rich HTML popup content area that works when you click a link/button (rather than hover like tooltips work). This uses a bunch of CSS3 and the functionality is also handled purely with CSS, although we discuss that at the end.
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Chris Coyier on