Rounded corners in HTML with CSS

All corners rounded

-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;

CSS3 specification: border-radius, -moz-border-radius for Mozilla browsers and -webkit-border-radius for webkit based browsers (Google Chrome, Apple's Safari)

Separated rounded corners

-moz-border-radius-topleft: 5px;
-moz-border-radius-topright: 5px;
-moz-border-radius-bottomleft: 5px;
-moz-border-radius-bottomright: 5px;
-webkit-border-top-left-radius: 5px;
-webkit-border-top-right-radius: 5px;
-webkit-border-bottom-left-radius: 5px;
-webkit-border-bottom-right-radius: 5px;
border-top-left-radius: 5px;
border-top-right-radius: 5px;
border-bottom-left-radius: 5px;
border-bottom-right-radius: 5px;

Compatibility: Mozilla Firefox, Safari 5+, Google Chrome, Opera 10.5+

Does not work in Internet Explorer