語法

用戶拖曳user-drag

Controlling whether the user can drag element.

Class	Declarations
`user-drag:value`	`-webkit-user-drag: value; user-drag: value;`
`user-drag:auto`	`-webkit-user-drag: auto; user-drag: auto;`
`user-drag:element`	`-webkit-user-drag: element; user-drag: element;`
`user-drag:none`	`-webkit-user-drag: none; user-drag: none;`

Conditionally apply

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

<div class="user-drag:auto:hover user-drag:auto@sm user-drag:auto@dark user-drag:auto@print">…</div>

Setting speed curve of the transition effect.

Controlling whether the user can select text.