What this Bootstrap Utility API class does
Sets the width property of an element.
Example usage & available classes
<div class="w-25 p-3">Width 25%</div>
<div class="w-50 p-3">Width 50%</div>
<div class="w-75 p-3">Width 75%</div>
<div class="w-100 p-3">Width 100%</div>
<div class="w-auto p-3">Width auto</div>
Example override
In the example override below, we are adding the additional class of "w-15" with a value of "15%".
"width": map-merge(
map-get($utilities, "width"),
(
values: map-merge(
map-get(map-get($utilities, "width"), "values"), (
15: 15%
)
)
)
)