Box Sizing

Set the box sizing model for an element.

Widely available

This feature is well established and works across many devices and browser versions.

Chrome
Edge
Firefox
Safari

bs-bb
box-sizing: border-box;
bs-cb
box-sizing: content-box;

Responsiveness

Use breakpoint prefixes to target different screen sizes. Styles apply from the breakpoint & up.

Target viewport sizes with breakpoint prefixes.

sm:bs-(value)
Small≥640px
md:bs-(value)
Medium≥768px
lg:bs-(value)
Large≥1024px
xxl:bs-(value)
Extra Large≥1536px

Hover State

Apply styles conditionally on hover using the h: prefix.

Add the h: prefix to apply styles only when the user hovers over the element.

Syntax:h:bs-(value)