<!DOCTYPE html> <title>SVG root as flex item</title> <link rel="author" title="David Grogan" href="mailto:dgrogan@chromium.org"> <link rel="help" href="https://drafts.csswg.org/css-flexbox/#algo-main-item" title="Part E"> <link rel="help" href="https://www.w3.org/TR/css-sizing-3/#intrinsic-sizes" title="For boxes with an intrinsic aspect ratio, but no intrinsic size"> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <meta name="assert" content="SVG's intrinsic width when used as flex base size stretches into the available size when it has no specified intrinsic sizes." /> <style> #reference-overlapped-red { position: absolute; background-color: red; width: 100px; height: 100px; z-index: -1; } </style> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div id="reference-overlapped-red"></div> <div style="display: flex; width: 100px;"> <svg viewBox="0 0 200 200"> <rect width="100%" height="100%" fill="green" /> </svg> </div>