<!DOCTYPE html>
<html>
<head>
<style>
.test {
display: inline-block;
margin: 20px;
width: 300px;
height: 150px;
box-sizing: border-box;
border: 50px solid blue;
}
.rounded {
border-radius: 40%;
}
.missing-border {
border-right-style: hidden;
}
.double {
border-style: double;
}
.inset {
border-style: solid;
}
.complex {
border-right-style: double;
border-bottom-style: dashed;
border-left-style: dotted;
}
</style>
</head>
<body>
<div class="test"></div>
<div class="test rounded"></div>
<div class="test missing-border"></div>
<div class="test double"></div>
<div class="test inset"></div>
<div class="test complex"></div>
</body>
</html>