<!DOCTYPE HTML>
<style>
body {
margin: 0;
}
#container {
display: flex;
justify-content: flex-start;
width: 200px;
height: 300px;
background-color: orange;
}
.item {
background-color: green;
border: solid thin blue;
width: 50px;
}
</style>
<p style="height: 20px">Tests invalidation on justify-content style change. Passes if only one big orange bar appear aligned to the box's right edge.</p>
<div id="container">
<div class="item">
<div style="height: 50px"></div>
</div>
<div class="item">
<div style="height: 50px"></div>
</div>
</div>