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<!DOCTYPE html>
<title>position:sticky elements should work correctly with grid layout</title>
<link rel="match" href="position-sticky-grid-ref.html" />
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
<meta name="assert" content="This test checks that position:sticky elements interoperate correctly with grid" />
<script src="../resources/ref-rectangle.js"></script>
<style>
.scroller {
position: relative;
overflow-x: scroll;
overflow-y: hidden;
width: 300px;
height: 100px;
margin-bottom: 15px;
}
.grid-container {
display: grid;
grid-template-columns: 25% 25% 25% 25%;
grid-template-rows: 100%;
width: 400px;
height: 90px;
}
.sticky {
position: sticky;
left: 50px;
}
.green {
background-color: green;
}
.grid-item {
width: 100%;
height: 100%;
grid-row: 1;
}
.indicator {
position: absolute;
background-color: red;
width: 100px;
height: 90px;
}
.padding {
height: 1px;
width: 700px;
}
</style>
<script>
window.addEventListener('load', function() {
document.getElementById('scroller1').scrollLeft = 0;
document.getElementById('scroller2').scrollLeft = 150;
document.getElementById('scroller3').scrollLeft = 300;
createIndicatorForStickyElements(document.querySelectorAll('.sticky'));
});
</script>
<p>You should see three green boxes of varying size below. There should be no red or blue.</p>
<div id="scroller1" class="scroller">
<div class="grid-container">
<div class="indicator" style="left: 100px;"></div>
<div class="grid-item" style="grid-column: 1;"></div>
<div class="sticky green grid-item" style="grid-column: 2;"></div>
<div class="green grid-item" style="grid-column: 3;"></div>
</div>
<div class="padding"></div>
</div>
<div id="scroller2" class="scroller">
<div class="grid-container">
<div class="indicator" style="left: 200px;"></div>
<div class="grid-item" style="grid-column: 1;"></div>
<div class="sticky green grid-item" style="grid-column: 2;"></div>
<div class="green grid-item" style="grid-column: 3;"></div>
</div>
<div class="padding"></div>
</div>
<div id="scroller3" class="scroller">
<div class="grid-container">
<div class="indicator" style="left: 300px;"></div>
<div class="grid-item" style="grid-column: 1;"></div>
<div class="sticky green grid-item" style="grid-column: 2;"></div>
<div class="green grid-item" style="grid-column: 3;"></div>
</div>
<div class="padding"></div>
</div>
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