<!DOCTYPE HTML>
<style>
body {
margin: 0;
}
#container {
display: grid;
grid: 150px 150px / 200px;
width: 200px;
height: 300px;
}
.item1 {
grid-row: 1;
grid-column: 1;
align-self: safe end;
background-color: green;
}
.item2 {
grid-row: 2;
grid-column: 1;
align-self: safe end;
background-color: green;
</style>
<p style="height: 20px">Tests invalidation on align-self style change (just overflow). Passes if there is no red.</p>
<div id="container">
<div class="item1">
<div style="height: 200px"></div>
</div>
<div class="item2">
<div style="height: 100px"></div>
</div>
</div>