css/css-flexbox/cross-axis-scrollbar.html

<!DOCTYPE html>
<html>
<title>CSS Flexbox: Scrollbars and flex-direction.</title>
<link href="support/flexbox.css" rel="stylesheet">
<link rel="help" href="https://www.w3.org/TR/css-flexbox-1/#flex-direction-property">
<link rel="help" href="https://www.w3.org/TR/css-overflow-4/#classic-scrollbars">
<link rel="match" href="reference/cross-axis-scrollbar-ref.html">
<meta name="assert" content="This test ensures that flexbox scrollbars take flex-direction into account."/>
<style>
body {
    margin: 0;
}

.flexbox {
    position: relative;
    background-color: green;
}

/* Don't use a red background on .flexbox as it might show behind scrollbars on platforms where the track may be transparent */
.flexbox::before {
    content: "";
    background-color: red;
    position: absolute;
    inset: 0;
    z-index: -1;
}

.vertical-rl {
    writing-mode: vertical-rl;
}

.vertical-lr {
    writing-mode: vertical-lr;
}

.column > div {
    flex: none;
    background-color: green;
    width: 100px;
    height: 10px;
}

.row > div {
    background-color: green;
    flex: 1;
    height: 50px;
    min-height: 0;
}

.vertical-lr > .column > div {
    flex: none;
    height: 50px;
    width: 20px;
}

.vertical-lr > .row > div {
    flex: 1;
    width: 100px;
}

</style>
<body>

This test passes if no red is showing.

<div style="position: relative;">

<div style="position: absolute; top: 0; left: 0;">
<div class="flexbox column" style="overflow-x: scroll; overflow-y: hidden; border-bottom: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-stretch"></div>
</div>
</div>

<div style="position: absolute; top: 0; left: 150px;">
<div class="flexbox column" style="overflow-y: scroll; overflow-x: hidden; border-right: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-stretch"></div>
</div>
</div>

<div style="position: absolute; top:0; left: 300px" class="vertical-lr">
<div class="flexbox column" style="overflow-y: scroll; overflow-x: hidden; border-right: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-flex-start"></div>
</div>
</div>

<div style="position: absolute; top:0; left: 450px;" class="vertical-lr">
<div class="flexbox column" style="overflow-x: scroll; overflow-y: hidden; border-bottom: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-flex-start"></div>
</div>
</div>

<div style="height: 20px; width: 100px; position: absolute; top: 100px; left: 0">
<div class="flexbox row" style="overflow-x: scroll; overflow-y: hidden; border-bottom: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-stretch"></div>
</div>
</div>

<div style="height: 20px; width: 100px; position: absolute; top: 100px; left: 150px">
<div class="flexbox row" style="overflow-y: scroll; overflow-x: hidden; border-right: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-stretch"></div>
</div>
</div>

<div style="height: 50px; width: 50px; position: absolute; top: 100px; left: 300px" class="vertical-lr">
<div class="flexbox row" style="overflow-x: scroll; overflow-y: hidden; border-bottom: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-stretch"></div>
</div>
</div>

<div style="height: 50px; width: 50px; position: absolute; top: 100px; left: 450px" class="vertical-lr">
<div class="flexbox row" style="overflow-y: scroll; overflow-x: hidden; border-right: 10px solid green;">
    <div class="align-self-flex-start"></div>
    <div class="align-self-center"></div>
    <div class="align-self-flex-end"></div>
    <div class="align-self-baseline"></div>
    <div class="align-self-stretch"></div>
</div>
</div>

</div>
<!-- FIXME: Add tests for vertical-rl.  Setting the logical
bottom border on these tests cause additional scrollbars to appear. -->

</body>
</html>