<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>CSS Masking: mask-image: filter with opacity</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-opacity-1-ref.html"> <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not."> <style type="text/css"> div { position: absolute; left: 10px; top: 60px; background-color: rgb(255,255,0); width: 100px; height: 50px; filter: invert(100%); opacity: 0.5; } </style> </head> <body> <div></div> </body> </html>