<!DOCTYPE html>
<html>
<head>
<style>#main {
border: 15px solid transparent;
padding: 15px;
border-image: url("border.png");
border-image-slice: 30;
border-image-width: 10px;
border-image-repeat: round;
}
</style>
</head>
<body>
<p id="main">This element uses an image as a border.</p>
<p>Click the "Try it" button to change the value of the borderImageWidth property.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
document.getElementById("main").style.borderImageWidth = "20px 30px";
}
</script>
<p><b>Note:</b> Internet Explorer 10, and earlier versions, do not support the border-image-width property.</p>
</body>
</html>