<!DOCTYPE HTML> <title>Don't pull background colors of container layers through DrawAboveRegions of ThebesLayers</title> <style> #outer { transform: translateX(1px); } #above { position: absolute; top: 50px; left: 50px; width: 100px; height: 100px; border: 1px solid black; } </style> <div id="outer"> <canvas id="canvas" height="100" width="200"></canvas> <div id="above"></div> </div> <script> var canvas = document.getElementById("canvas"); var cx = canvas.getContext("2d"); cx.fillStyle="lime"; cx.fillRect(0, 0, 200, 100); </script>