<!DOCTYPE html>
<html>
<head>
<style type="text/css">
.box {
display: inline-block;
box-sizing: border-box;
-moz-box-sizing: border-box;
width: 150px;
height: 150px;
margin: 10px;
border-width: 50px;
border-color: rgba(0, 0, 0, 0.5);
border-style: solid;
border-radius:50%;
}
.smaller {
height: 102px;
}
</style>
</head>
<body>
<!-- Test mixed border styles. -->
<div class="box"></div>
<div class="box" style="border-radius: 40%"></div>
<div class="box" style="border-right-style: double"></div>
<div class="box" style="border-right-style: double; border-right-width: 0;"></div>
<br>
<div class="box" style="border-right-color: transparent;"></div>
<div class="box" style="border-right-color: transparent; border-right-width: 50px;"></div>
<div class="box" style="border-right-color: transparent; border-right-width: 0;
border-bottom-color: transparent;"></div>
<div class="box" style="border-right-color: transparent; border-right-width: 0;
border-bottom-color: transparent;border-bottom-width: 0"></div>
<br>
<div class="smaller box"></div>
<div class="smaller box" style="border-right-style: double"></div>
<div class="smaller box" style="border-right-color: transparent; border-right-width: 0;
border-bottom-color: transparent;"></div>
<div class="smaller box" style="border-radius: 60%"></div>
</body>
</html>