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92 lines
2.1 KiB
HTML
92 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<title>position:sticky elements should properly interact with margins</title>
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<link rel="match" href="position-sticky-margins-ref.html" />
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<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
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<meta name="assert" content="position:sticky elements should ignore margins when sticking, but consider them when making sure sticky elements do not escape their containing block" />
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<style>
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.group {
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display: inline-block;
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position: relative;
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width: 180px;
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height: 400px;
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}
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.scroller {
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position: relative;
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width: 150px;
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height: 300px;
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overflow-y: scroll;
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overflow-x: hidden;
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}
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.holder {
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width: 130px;
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height: 200px;
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}
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.sticky {
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position: sticky;
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background-color: green;
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top: 5px;
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margin: 15px;
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}
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.indicator {
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left: 15px;
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position: absolute;
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background-color: red;
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}
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.box {
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width: 100px;
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height: 100px;
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}
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.padding {
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height: 300px;
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}
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</style>
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<script>
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window.addEventListener('load', function() {
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document.getElementById('scroller1').scrollTop = 0;
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document.getElementById('scroller2').scrollTop = 60;
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document.getElementById('scroller3').scrollTop = 120;
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});
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</script>
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<!-- Before sticking, the margin should be obeyed. -->
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<div class="group">
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<div id="scroller1" class="scroller">
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<div class="indicator box" style="top: 15px;"></div>
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<div class="holder">
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<div class="sticky box"></div>
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</div>
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<div class="padding"></div>
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</div>
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</div>
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<!-- Whilst stuck, the margin is irrelevant. -->
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<div class="group">
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<div id="scroller2" class="scroller">
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<div class="indicator box" style="top: 65px;"></div>
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<div class="holder">
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<div class="sticky box"></div>
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</div>
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<div class="padding"></div>
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</div>
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</div>
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<!-- The margin does count when making sure the sticky element does not escape
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its containing block. -->
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<div class="group">
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<div id="scroller3" class="scroller">
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<div class="indicator box" style="top: 100px;"></div>
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<div class="holder">
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<div class="sticky box"></div>
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</div>
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<div class="padding"></div>
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</div>
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</div>
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<div>You should see three green boxes above. No red should be visible.</div>
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