語法

外框寬度outline-width

Setting the thickness of an element's outline.

Conditionally apply

Apply styles based on different states using selectors and applying conditionally.

<div class="outline-width:medium:hover outline-width:medium@sm outline-width:medium@dark outline-width:medium@print">…</div>

Setting the style of an element's outline.

Controlling the desired behavior for an element's overflow.