What this Bootstrap Utility API class does
Sets the shorthand border-top property of an element. The CSS property "border-top" is used to set the width, style, and color of the top border of an HTML element.
Example usage & available classes
<div class="border-top"></div>
Example override
In the example below, we are making the utility responsive, which means you can also use it per breakpoint: ".border-top-lg"
"border-top": map-merge(
map-get($utilities, "border-top"),
(
responsive: true
)
)