<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>CSS Masking: mask-image: data url mask</title> <link rel="author" title="CJ Ku" href="mailto:cku@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-image"> <link rel="match" href="mask-image-5-ref.html"> <meta name="assert" content="Test checks handling data url mask correctly."> <style type="text/css"> div { background-color: purple; width: 50px; height: 50px; } div.mask-by-data-url { /* a 50x50 opaque blue rect */ mask: url("data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIj8+Cjxzdmcgd2lkdGg9IjUwIiBoZWlnaHQ9IjUwIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPgogIDxyZWN0IHg9IjAiIHk9IjAiICB3aWR0aD0iNTAiIGhlaWdodD0iNTAiIGZpbGw9ImJsdWUiIGZpbGwtb3BhY2l0eT0iMSIvPgo8L3N2Zz4K"); } </style> </head> <body> <div class="mask-by-data-url"/> </body> </html>