Layout
top / right / bottom / left
用于控制定位元素位置的工具类。
| Class | Styles |
|---|---|
inset-<number> | inset: calc(var(--spacing) * <number>); |
-inset-<number> | inset: calc(var(--spacing) * -<number>); |
inset-<fraction> | inset: calc(<fraction> * 100%); |
-inset-<fraction> | inset: calc(<fraction> * -100%); |
inset-px | inset: 1px; |
-inset-px | inset: -1px; |
inset-full | inset: 100%; |
-inset-full | inset: -100%; |
inset-auto | inset: auto; |
inset-(<custom-property>) | inset: var(<custom-property>); |
inset-[<value>] | inset: <value>; |
inset-x-<number> | inset-inline: calc(var(--spacing) * <number>); |
-inset-x-<number> | inset-inline: calc(var(--spacing) * -<number>); |
inset-x-<fraction> | inset-inline: calc(<fraction> * 100%); |
-inset-x-<fraction> | inset-inline: calc(<fraction> * -100%); |
inset-x-px | inset-inline: 1px; |
-inset-x-px | inset-inline: -1px; |
inset-x-full | inset-inline: 100%; |
-inset-x-full | inset-inline: -100%; |
inset-x-auto | inset-inline: auto; |
inset-x-(<custom-property>) | inset-inline: var(<custom-property>); |
inset-x-[<value>] | inset-inline: <value>; |
inset-y-<number> | inset-block: calc(var(--spacing) * <number>); |
-inset-y-<number> | inset-block: calc(var(--spacing) * -<number>); |
inset-y-<fraction> | inset-block: calc(<fraction> * 100%); |
-inset-y-<fraction> | inset-block: calc(<fraction> * -100%); |
inset-y-px | inset-block: 1px; |
-inset-y-px | inset-block: -1px; |
inset-y-full | inset-block: 100%; |
-inset-y-full | inset-block: -100%; |
inset-y-auto | inset-block: auto; |
inset-y-(<custom-property>) | inset-block: var(<custom-property>); |
inset-y-[<value>] | inset-block: <value>; |
start-<number> | inset-inline-start: calc(var(--spacing) * <number>); |
-start-<number> | inset-inline-start: calc(var(--spacing) * -<number>); |
start-<fraction> | inset-inline-start: calc(<fraction> * 100%); |
-start-<fraction> | inset-inline-start: calc(<fraction> * -100%); |
start-px | inset-inline-start: 1px; |
-start-px | inset-inline-start: -1px; |
start-full | inset-inline-start: 100%; |
-start-full | inset-inline-start: -100%; |
start-auto | inset-inline-start: auto; |
start-(<custom-property>) | inset-inline-start: var(<custom-property>); |
start-[<value>] | inset-inline-start: <value>; |
end-<number> | inset-inline-end: calc(var(--spacing) * <number>); |
-end-<number> | inset-inline-end: calc(var(--spacing) * -<number>); |
end-<fraction> | inset-inline-end: calc(<fraction> * 100%); |
-end-<fraction> | inset-inline-end: calc(<fraction> * -100%); |
end-px | inset-inline-end: 1px; |
-end-px | inset-inline-end: -1px; |
end-full | inset-inline-end: 100%; |
-end-full | inset-inline-end: -100%; |
end-auto | inset-inline-end: auto; |
end-(<custom-property>) | inset-inline-end: var(<custom-property>); |
end-[<value>] | inset-inline-end: <value>; |
top-<number> | top: calc(var(--spacing) * <number>); |
-top-<number> | top: calc(var(--spacing) * -<number>); |
top-<fraction> | top: calc(<fraction> * 100%); |
-top-<fraction> | top: calc(<fraction> * -100%); |
top-px | top: 1px; |
-top-px | top: -1px; |
top-full | top: 100%; |
-top-full | top: -100%; |
top-auto | top: auto; |
top-(<custom-property>) | top: var(<custom-property>); |
top-[<value>] | top: <value>; |
right-<number> | right: calc(var(--spacing) * <number>); |
-right-<number> | right: calc(var(--spacing) * -<number>); |
right-<fraction> | right: calc(<fraction> * 100%); |
-right-<fraction> | right: calc(<fraction> * -100%); |
right-px | right: 1px; |
-right-px | right: -1px; |
right-full | right: 100%; |
-right-full | right: -100%; |
right-auto | right: auto; |
right-(<custom-property>) | right: var(<custom-property>); |
right-[<value>] | right: <value>; |
bottom-<number> | bottom: calc(var(--spacing) * <number>); |
-bottom-<number> | bottom: calc(var(--spacing) * -<number>); |
bottom-<fraction> | bottom: calc(<fraction> * 100%); |
-bottom-<fraction> | bottom: calc(<fraction> * -100%); |
bottom-px | bottom: 1px; |
-bottom-px | bottom: -1px; |
bottom-full | bottom: 100%; |
-bottom-full | bottom: -100%; |
bottom-auto | bottom: auto; |
bottom-(<custom-property>) | bottom: var(<custom-property>); |
bottom-[<value>] | bottom: <value>; |
left-<number> | left: calc(var(--spacing) * <number>); |
-left-<number> | left: calc(var(--spacing) * -<number>); |
left-<fraction> | left: calc(<fraction> * 100%); |
-left-<fraction> | left: calc(<fraction> * -100%); |
left-px | left: 1px; |
-left-px | left: -1px; |
left-full | left: 100%; |
-left-full | left: -100%; |
left-auto | left: auto; |
left-(<custom-property>) | left: var(<custom-property>); |
left-[<value>] | left: <value>; |
示例
基础示例
使用 top-<number>、right-<number>、bottom-<number>、left-<number> 和 inset-<number> 等工具类（如 top-0 和 bottom-4）来设置已定位元素的水平或垂直位置：
01
02
03
04
05
06
07
08
09
<!-- Pin to top left corner --><div class="relative size-32 ..."> <div class="absolute top-0 left-0 size-16 ...">01</div></div><!-- Span top edge --><div class="relative size-32 ..."> <div class="absolute inset-x-0 top-0 h-16 ...">02</div></div><!-- Pin to top right corner --><div class="relative size-32 ..."> <div class="absolute top-0 right-0 size-16 ...">03</div></div><!-- Span left edge --><div class="relative size-32 ..."> <div class="absolute inset-y-0 left-0 w-16 ...">04</div></div><!-- Fill entire parent --><div class="relative size-32 ..."> <div class="absolute inset-0 ...">05</div></div><!-- Span right edge --><div class="relative size-32 ..."> <div class="absolute inset-y-0 right-0 w-16 ...">06</div></div><!-- Pin to bottom left corner --><div class="relative size-32 ..."> <div class="absolute bottom-0 left-0 size-16 ...">07</div></div><!-- Span bottom edge --><div class="relative size-32 ..."> <div class="absolute inset-x-0 bottom-0 h-16 ...">08</div></div><!-- Pin to bottom right corner --><div class="relative size-32 ..."> <div class="absolute right-0 bottom-0 size-16 ...">09</div></div>使用负值
要使用负的 top/right/bottom/left 值，在类名前加上破折号将其转换为负值：
<div class="relative size-32 ..."> <div class="absolute -top-4 -left-4 size-14 ..."></div></div>使用逻辑属性
使用 start-<number> 和 end-<number> 工具类（如 start-0 和 end-4）来设置 inset-inline-start 和 inset-inline-end 逻辑属性，这些属性会根据文本方向映射到左侧或右侧：
Left-to-right
Right-to-left
<div dir="ltr"> <div class="relative size-32 ..."> <div class="absolute start-0 top-0 size-14 ..."></div> </div> <div> <div dir="rtl"> <div class="relative size-32 ..."> <div class="absolute start-0 top-0 size-14 ..."></div> </div> <div></div> </div> </div></div>要获得更多控制，你还可以使用 LTR 和 RTL 修饰符 根据当前文本方向有条件地应用特定样式。
使用自定义值
Use utilities like inset-[<value>] and top-[<value>] to set the position based on a completely custom value:
<div class="inset-[3px] ..."> <!-- ... --></div>For CSS variables, you can also use the inset-(<custom-property>) syntax:
<div class="inset-(--my-position) ..."> <!-- ... --></div>This is just a shorthand for inset-[var(<custom-property>)] that adds the var() function for you automatically.
响应式设计
Prefix inset,inset-x,inset-y,start,end,top,left,bottom, and right utilities with a breakpoint variant like md: to only apply the utility at medium screen sizes and above:
<div class="top-4 md:top-6 ..."> <!-- ... --></div>Learn more about using variants in the variants documentation.
自定义主题
The inset-<number>,inset-x-<number>,inset-y-<number>,start-<number>,end-<number>,top-<number>,left-<number>,bottom-<number>, and right-<number> utilities are driven by the --spacing theme variable, which can be customized in your own theme:
@theme { --spacing: 1px; }Learn more about customizing the spacing scale in the theme variable documentation.
