<!DOCTYPE HTML> <title>multi-background-clip-content-border-ref</title> <style> div#outer { background-image: url(green-16x20.png); width: 100px; height: 100px; border: 20px solid transparent; } div#inner { background-image: url(aqua-32x32.png); width: 100%; height: 100%; } </style> <div id="outer"><div id="inner"></div></div>