<!DOCTYPE html> <meta charset="UTF-8"> <title>CSS Containment Test: 'contain: paint' and clipping descendants at padding edge</title> <link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <link rel="help" href="https://www.w3.org/TR/css-contain-1/#containment-paint"> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <meta content="This test checks that the paint of the descendant (a red square image) and its geometry is clipped to the padding edge of the element's principal box." name="assert"> <!-- contain-paint-clip-011: content overflows horizontally, principal box has no padding contain-paint-clip-012: content overflows vertically, principal box has no padding contain-paint-clip-013: content overflows horizontally, principal box has horizontal padding contain-paint-clip-014: content overflows vertically, principal box has vertical padding contain-paint-clip-015: content overflow horizontally, principal box has horizontal padding and corner clipping is involved contain-paint-clip-016: content overflow vertically, principal box has vertical padding and corner clipping is involved contain-paint-clip-017: principal box has horizontal and vertical padding, generated ::before content is inside top-right corner contain-paint-clip-018: principal box has horizontal and vertical padding, generated ::after content is inside top-left corner --> <style> div#red-overlapped-test { background-color: red; contain: paint; height: 50px; padding: 25px 0px; width: 100px; } img { vertical-align: bottom; } div#green-overlapping-reference { background-color: green; bottom: 100px; height: 100px; position: relative; width: 100px; } </style> <p>Test passes if there is a filled green square and <strong>no red</strong>. <div id="red-overlapped-test"><img src="support/swatch-red.png" width="100" height="175" alt="Image download support must be enabled"></div> <div id="green-overlapping-reference"></div>