<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>CSS Masking: mask-position: mask positioning</title> <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com"> <link rel="author" title="Mozilla" href="https://www.mozilla.org"> <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position"> <link rel="match" href="mask-position-3-ref.html"> <meta name="assert" content="Test checks whether positioning mask layer works correctly or not."> <style type="text/css"> div { width: 100px; height: 100px; } #outer { border: 1px solid black; } #inner { background-color: purple; mask-position: center 20%; mask-image: url(support/50x50-opaque-blue.svg); mask-repeat: no-repeat; } </style> </head> <body> <div id="outer"> <div id="inner"></div> </div> </body> </html>