<!doctype html> <title>overflow:auto containers shouldn't grow due to scrollbars, even if there's out of flow content that overflows</title> <link rel="help" href="https://drafts.csswg.org/css-overflow/#propdef-overflow-y"> <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1637511"> <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> <link rel="author" title="Mozilla" href="https://mozilla.org"> <link rel="match" href="/css/reference/blank.html"> <!-- If we create a horizontal scrollbar it'd cause overflow in the vertical direction as well, due to the svg's aspect-ratio. --> <div style="width: 300px;"> <div style="overflow:auto"> <div style="height: 0; position: relative;"> <svg style="top: 0; left: 0; position: absolute" width="300" height="300"></svg> </div> </div> </div>