- 入门
- 核心概念
- 定制
- Base Styles
- 布局
- Flexbox & Grid
- Flex Basis
- Flex Direction
- Flex Wrap
- Flex
- Flex Grow
- Flex Shrink
- Order
- Grid Template Columns
- Grid Column Start / End
- Grid Template Rows
- Grid Row Start / End
- Grid Auto Flow
- Grid Auto Columns
- Grid Auto Rows
- Gap
- Justify Content
- Justify Items
- Justify Self
- Align Content
- Align Items
- Align Self
- Place Content
- Place Items
- Place Self
- 间隔
- 尺寸
- 排版
- Font Family
- Font Size
- Font Smoothing
- Font Style
- Font Weight
- Font Variant Numeric
- Letter Spacing
- Line Clamp
- Line Height
- List Style Image
- List Style Position
- List Style Type
- Text Align
- Text Color
- Text Decoration
- Text Decoration Color
- Text Decoration Style
- Text Decoration Thickness
- Text Underline Offset
- Text Transform
- Text Overflow
- Text Wrap
- Text Indent
- Vertical Align
- Whitespace
- Word Break
- Hyphens
- Content
- 背景
- 边框
- Effects
- Filters
- 表格 Tables
- Transitions & Animation
- Transforms
- Interactivity
- SVG
- Accessibility
- 其他
- Install Tailwind CSS using PostCSS
- Framework Guides
- Try Tailwind CSS using the Play CDN
- Install Tailwind CSS with Next.js
- Install Tailwind CSS with Laravel
- Install Tailwind CSS with Vite
- Install Tailwind CSS with Nuxt
- Install Tailwind CSS with Gatsby
- Install Tailwind CSS with SolidJS
- Install Tailwind CSS with SvelteKit
- Install Tailwind CSS with Angular
- Install Tailwind CSS with Ruby on Rails
- Install Tailwind CSS with Remix
- Install Tailwind CSS with Phoenix
- Install Tailwind CSS with Parcel
- Install Tailwind CSS with Symfony
- Install Tailwind CSS with Meteor
- Install Tailwind CSS with Create React App
- Install Tailwind CSS with Adonis
- Install Tailwind CSS With Ember.js
- Install Tailwind CSS with Astro
- Install Tailwind CSS with Qwik
- Install Tailwind CSS with Rspack
Background Position
Utilities for controlling the position of an element's background image.
Quick reference
Class | Properties |
---|---|
bg-bottom | background-position: bottom; |
bg-center | background-position: center; |
bg-left | background-position: left; |
bg-left-bottom | background-position: left bottom; |
bg-left-top | background-position: left top; |
bg-right | background-position: right; |
bg-right-bottom | background-position: right bottom; |
bg-right-top | background-position: right top; |
bg-top | background-position: top; |
Basic usage
Setting the background position
Use utilities like bg-center
, bg-right
, and bg-left-top
to the position of an element’s background image.
bg-left-top
bg-top
bg-right-top
bg-left
bg-center
bg-right
bg-left-bottom
bg-bottom
bg-right-bottom
<div class="bg-no-repeat bg-left-top ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-top ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-right-top ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-left ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-center ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-right ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-left-bottom ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-bottom ..." style="background-image: url(...);"></div>
<div class="bg-no-repeat bg-right-bottom ..." style="background-image: url(...);"></div>
Applying conditionally
Hover, focus, and other states
Tailwind lets you conditionally apply utility classes in different states using variant modifiers. For example, use hover:bg-top
to only apply the bg-top
utility on hover.
<div class="bg-center hover:bg-top ..." style="background-image: url(...)"></div>
For a complete list of all available state modifiers, check out the Hover, Focus, & Other States documentation.
Breakpoints and media queries
You can also use variant modifiers to target media queries like responsive breakpoints, dark mode, prefers-reduced-motion, and more. For example, use md:bg-top
to apply the bg-top
utility at only medium screen sizes and above.
<div class="bg-center md:bg-top ..." style="background-image: url(...)"></div>
To learn more, check out the documentation on Responsive Design, Dark Mode and other media query modifiers.
Using custom values
Customizing your theme
By default, Tailwind provides nine background-position
utilities. You change, add, or remove these by editing the theme.backgroundPosition
section of your Tailwind config.
module.exports = {
theme: {
backgroundPosition: {
bottom: 'bottom',
'bottom-4': 'center bottom 1rem',
center: 'center',
left: 'left',
'left-bottom': 'left bottom',
'left-top': 'left top',
right: 'right',
'right-bottom': 'right bottom',
'right-top': 'right top',
top: 'top',
'top-4': 'center top 1rem',
}
}
}
Learn more about customizing the default theme in the theme customization documentation.
Arbitrary values
If you need to use a one-off background-position
value that doesn’t make sense to include in your theme, use square brackets to generate a property on the fly using any arbitrary value.
<div class="bg-[center_top_1rem]">
<!-- ... -->
</div>
Learn more about arbitrary value support in the arbitrary values documentation.
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