<!doctype html> <meta charset="utf-8"> <title>CSS Overflow: overflow-clip-margin: invalidation on change</title> <link rel="help" href="https://www.w3.org/TR/css-overflow-3/#propdef-overflow-clip-margin"> <link rel="author" title="Scott Violet" href="mailto:sky@chromium.org"> <style> .container { display: flex; } .parent_overflow { position: relative; top: -10px; left: -10px; width: 120px; height: 120px; flex: none; background-color: green; } .parent { width: 100px; height: 100px; flex: none; background-color: green; } .spacer { flex: none; height: 100px; width: 100px; } </style> <div class="spacer"></div> <div class="container"> <div class="spacer"></div> <div class="parent"></div> <div class="spacer"></div> <div class="container"> <div class="spacer"></div> <div class="parent_overflow"></div> </body>