<html>
<head>
<style type="text/css" media="screen">
div {
margin: 20px;
width: 200px;
height: 40px;
border: 20px solid black;
-webkit-border-radius: 30px;
-moz-border-radius: 30px;
}
#justTop {
border-top-color: red;
}
#topAndLeft {
border-top-color: red;
border-left-color: red;
}
#topAndRight {
border-top-color: red;
border-right-color: red;
}
#topAndLeftAndRight {
border-top-color: red;
border-left-color: red;
border-right-color:red;
}
</style>
</head>
<body>
<p>When two border sides have different colors, the edge joining them should be anti-aliased. When two border sides have the same color, the edge joining them should not be anti-aliased and no corner joints should be visible.</p>
<div id="justTop"></div>
<div id="topAndLeft"></div>
<div id="topAndRight"></div>
<div id="topAndLeftAndRight"></div>
</body>
</html>