CSS Hidden Features
I have definitely picked up some useful tips in the *hidden features* style questions concerning PHP and XHTML. 

So here is one to cover CSS. While easy to pick up, it takes a little while to learn about everything, their default behaviours, properties etc

Here are some to start the ball

    .element {
        display: block !important; /* takes precedence over other stylings */
        -moz-border-radius: 10px; /* mozilla .... rounded corners with no images */
        -webkit-border-radius: 10px /* webkit equivalent */
    }
    
    
    @charset "UTF-8"; /* set the character set */

These are not so much *hidden*, but their use is not often widespread. What tips, tricks, rare features have you discovered with CSS?

CSS Hidden Features
===

I have definitely picked up some useful tips in the *hidden features* style questions concerning PHP and XHTML. 

So here is one to cover CSS. While easy to pick up, it takes a little while to learn about everything, their default behaviours, properties etc

Here are some to start the ball

    .element {
        display: block !important; /* takes precedence over other stylings */
        -moz-border-radius: 10px; /* mozilla .... rounded corners with no images */
        -webkit-border-radius: 10px /* webkit equivalent */
    }
    
    
    @charset "UTF-8"; /* set the character set */

These are not so much *hidden*, but their use is not often widespread. What tips, tricks, rare features have you discovered with CSS?
