CSS border-inline-start-width Property - Playground Example

<!DOCTYPE html>
<html>
<head>
<style type="text/css">
div {
  background-color:#eee;
  color:#8b008b;
  padding:.75em;
  width:300px;
  height:100px;
  border-inline-start: dashed red;
  border-inline-start-width: 10px
}
</style>
</head>
<body>
<div>This is a box with a border around it.</div>
</body>
</html>