Format:
.shadow-{0..5}
Example:
<div class="display-flex flex-direction-column gap-3">
<div class="background-surface padding-3 shadow-0" style="height: 100px; width: 200px;">
shadow-0
</div>
<div class="background-surface padding-3 shadow-1" style="height: 100px; width: 200px;">
shadow-1
</div>
<div class="background-surface padding-3 shadow-2" style="height: 100px; width: 200px;">
shadow-2
</div>
<div class="background-surface padding-3 shadow-3" style="height: 100px; width: 200px;">
shadow-3
</div>
<div class="background-surface padding-3 shadow-4" style="height: 100px; width: 200px;">
shadow-4
</div>
<div class="background-surface padding-3 shadow-5" style="height: 100px; width: 200px;">
shadow-5
</div>
</div>