Page Widget How to - Create Beveled corners and negative border-radius with CSS3

Question

We would like to know how to create Beveled corners and negative border-radius with CSS3.

Answer


<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
.round {<!--from  w  w w  .j  av  a 2 s.c  o m-->
  background: radial-gradient(circle at 0 100%, rgba(11, 111, 111, 0) 14px,#c00 15px), 
              radial-gradient(circle at 100% 100%, rgba(111, 0, 0, 0) 14px, #c00 15px), 
              radial-gradient(circle at 100% 0, rgba(1, 111, 0, 0) 14px, #c00 15px), 
              radial-gradient(circle at 0 0, rgba(204, 111, 0, 0) 14px, #c00 15px);
  background-position: bottom left, bottom right, top right, top left;
  background-size: 50% 50%;
  background-repeat: no-repeat;
  padding: 14px;
}
</style>
</head>
<body>
  <div class="round">java2s.com</div>
</body>
</html>

The code above is rendered as follows: