flex

flex

用于控制 flex 项目如何增长和收缩的实用工具。

Class Styles

Class	Styles
`flex-<number>`	`flex: <number>;`
`flex-<fraction>`	`flex: calc(<fraction> * 100%);`
`flex-auto`	`flex: 1 1 auto;`
`flex-initial`	`flex: 0 1 auto;`
`flex-none`	`flex: none;`
`flex-(<custom-property>)`	`flex: var(<custom-property>);`
`flex-[<value>]`	`flex: <value>;`

flex-<number>

flex: <number>;

flex-<fraction>

flex: calc(<fraction> * 100%);

flex-auto

flex: 1 1 auto;

flex-initial

flex: 0 1 auto;

flex-none

flex: none;

flex-(<custom-property>)

flex: var(<custom-property>);

flex-[<value>]

flex: <value>;

示例

基本示例

使用 flex-<number> 工具，如 flex-1，以允许 flex 项目根据需要增长和收缩，忽略其初始大小：

<div class="flex">
  <div class="w-14 flex-none ...">01</div>
  <div class="w-64 flex-1 ...">02</div>
  <div class="w-32 flex-1 ...">03</div>
</div>

初始

使用 flex-initial 允许一个 flex 项目收缩但不增长，考虑其初始大小：

<div class="flex">
  <div class="w-14 flex-none ...">01</div>
  <div class="w-64 flex-initial ...">02</div>
  <div class="w-32 flex-initial ...">03</div>
</div>

自动

使用 flex-auto 允许一个 flex 项目增长和收缩，考虑其初始大小：

<div class="flex ...">
  <div class="w-14 flex-none ...">01</div>
  <div class="w-64 flex-auto ...">02</div>
  <div class="w-32 flex-auto ...">03</div>
</div>

无

使用 flex-none 防止一个 flex 项目增长或收缩：

<div class="flex ...">
  <div class="w-14 flex-none ...">01</div>
  <div class="w-32 flex-none ...">02</div>
  <div class="flex-1 ...">03</div>
</div>

使用自定义值

Use the flex-[<value>] syntax to set the flex 缩写属性 based on a completely custom value:

<div class="flex-[3_1_auto] ...">
  <!-- ... -->
</div>

For CSS variables, you can also use the flex-(<custom-property>) syntax:

<div class="flex-(--my-flex) ...">
  <!-- ... -->
</div>

This is just a shorthand for flex-[var(<custom-property>)] that adds the var() function for you automatically.

响应式设计

Prefix a flex utility with a breakpoint variant like md: to only apply the utility at medium screen sizes and above:

<div class="flex-none md:flex-1 ...">
  <!-- ... -->
</div>

Learn more about using variants in the variants documentation.

目录