/*!markdown
---
title: Top / Right / Bottom / Left
---
用来控制位置的样式集。
| Class | Properties |
| ------------ | --------------------------------------------------------------------------------- |
| inset-0 | top: 0px;
right: 0px;
bottom: 0px;
left: 0px; |
| -inset-0 | top: 0px;
right: 0px;
bottom: 0px;
left: 0px; |
| inset-y-0 | top: 0px;
bottom: 0px; |
| inset-x-0 | right: 0px;
left: 0px; |
| -inset-y-0 | top: 0px;
bottom: 0px; |
| -inset-x-0 | right: 0px;
left: 0px; |
| top-0 | top: 0px; |
| right-0 | right: 0px; |
| bottom-0 | bottom: 0px; |
| left-0 | left: 0px; |
| -top-0 | top: 0px; |
| -right-0 | right: 0px; |
| -bottom-0 | bottom: 0px; |
| -left-0 | left: 0px; |
| inset-0.5 | top: 0.125rem;
right: 0.125rem;
bottom: 0.125rem;
left: 0.125rem; |
| -inset-0.5 | top: -0.125rem;
right: -0.125rem;
bottom: -0.125rem;
left: -0.125rem; |
| inset-y-0.5 | top: 0.125rem;
bottom: 0.125rem; |
| inset-x-0.5 | right: 0.125rem;
left: 0.125rem; |
| -inset-y-0.5 | top: -0.125rem;
bottom: -0.125rem; |
| -inset-x-0.5 | right: -0.125rem;
left: -0.125rem; |
| top-0.5 | top: 0.125rem; |
| right-0.5 | right: 0.125rem; |
| bottom-0.5 | bottom: 0.125rem; |
| left-0.5 | left: 0.125rem; |
| -top-0.5 | top: -0.125rem; |
| -right-0.5 | right: -0.125rem; |
| -bottom-0.5 | bottom: -0.125rem; |
| -left-0.5 | left: -0.125rem; |
按以下尺寸表依次类推
| 尺寸 | 大小 |
| ---- | -------------- |
| 0 | 0 |
| 0.5 | 0.125rem; |
| 1 | 0.25rem |
| 1.5 | 0.375rem |
| 1.5 | 0.375rem |
| 2 | 0.5rem |
| 2.5 | 0.625rem |
| 3 | 0.75rem |
| 3.5 | 0.875rem |
| 4 | 1rem |
| 5 | 1.25rem |
| 6 | 1.5rem |
| 7 | 1.75rem |
| 8 | 2rem |
| 9 | 2.25rem |
| 10 | 2.5rem |
| 11 | 2.75rem |
| 12 | 3rem |
| 14 | 3.5rem |
| 16 | 4rem |
| 20 | 5rem |
| 24 | 6rem |
| 28 | 7rem |
| 32 | 8rem |
| 36 | 9rem |
| 40 | 10rem |
| 44 | 11rem |
| 48 | 12rem |
| 52 | 13rem |
| 56 | 14rem |
| 60 | 15rem |
| 64 | 16rem |
| 68 | 17rem |
| 72 | 18rem |
| 76 | 19rem |
| 80 | 20rem |
| 96 | 24rem |
| auto | auto |
| 1/2 | 50% |
| 1/3 | 33.333333% |
| 2/3 | 66.666667% |
| 1/4 | 25%; |
| 2/4 | 50%; |
| 3/4 | 75%; |
| full | 100%; |
| px | 0.0625rem(1px) |
## 用法
结合 relative 和 absolute 定位 和位置样式 `{top|right|bottom|left|inset}-xxx`,可以很方便的实现各种组件布局。
```html