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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-position/sticky/position-sticky-left-and-right-overconstrained.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>position:sticky elements with width larger than the space available between left and right</title>
<meta name="assert" content="This test checks that the end edge is adjusted when the sticky view rectangle width ends up smaller than the width of the sticky element border box" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.scroller {
width: 100px;
height: 100px;
overflow: auto;
position: relative;
display: flex;
}
.padding {
width: 200px;
height: 100px;
flex: none;
}
.sticky {
position: sticky;
background: green;
left: 20px;
right: 0;
width: 200px;
height: 100px;
flex: none;
}
</style>
<body>
<div class="scroller">
<div class="padding"></div>
<div class="sticky"></div>
<div class="padding"></div>
</div>
</body>
<script>
test(() => {
const scroller = document.querySelector('.scroller');
const element = document.querySelector('.sticky');
scroller.scrollLeft = 0;
assert_equals(element.offsetLeft, 20);
}, 'start of scroll container');
test(() => {
const scroller = document.querySelector('.scroller');
const element = document.querySelector('.sticky');
scroller.scrollLeft = 160;
assert_equals(element.offsetLeft, 180);
}, 'right before the in-flow position of the sticky box');
test(() => {
const scroller = document.querySelector('.scroller');
const element = document.querySelector('.sticky');
scroller.scrollLeft = 220;
assert_equals(element.offsetLeft, 240);
}, 'right after the in-flow position the sticky box');
test(() => {
const scroller = document.querySelector('.scroller');
const element = document.querySelector('.sticky');
scroller.scrollLeft = 500;
assert_equals(element.offsetLeft, 400);
}, 'end of scroll container');
</script>