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<html><head><style> div { background-color: lightgrey; border: 30px solid transparent; border-image: url('border.png'); border-image-slice: 30; border-image-width: 10px; border-image-outset: 0; border-image-repeat: round;}</style></head><body><div id="main"> <p>This is a DIV element that uses an image as a border.</p></div><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></body></html>