Flexbox & Grid

flex

Utilities for controlling how flex items both grow and shrink.

ClassStyles
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>;

Examples

Basic example

Use flex-<number> utilities like flex-1 to allow a flex item to grow and shrink as needed, ignoring its initial size:

01
02
03
<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>

Initial

Use flex-initial to allow a flex item to shrink but not grow, taking into account its initial size:

01
02
03
<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>

Auto

Use flex-auto to allow a flex item to grow and shrink, taking into account its initial size:

01
02
03
<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>

None

Use flex-none to prevent a flex item from growing or shrinking:

01
02
03
<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>

Using a custom value

Use the flex-[<value>] syntax to set the flex shorthand property 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.

Responsive design

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.

Copyright © 2025 Tailwind Labs Inc.·Trademark Policy

Tailwind CSS 中文网(本网站)的目标是为中文开发者提供准确、及时的 Tailwind CSS 中文文档

Tailwind CSS 中文文档由本网站维护人员共同翻译,采用 MIT 开源协议发布

本网站与 tailwindcss.com 及 Tailwind Labs Inc. 并无从属关系

Tailwind 商标由 Tailwind Labs Inc. 所有

京ICP备15031610号-8