background-attachment
快速参考
| 类别 | 样式 |
|---|---|
| bg-fixed | background-attachment: fixed; |
| bg-local | background-attachment: local; |
| bg-scroll | background-attachment: scroll; |
示例
固定背景图像
使用 bg-fixed 工具将背景图像相对于视口固定：
滚动内容以查看背景图像固定在原地
Maybe we can live without libraries, people like you and me. Maybe. Sure, we're too old to change the world, but what about that kid, sitting down, opening a book, right now, in a branch at the local library and finding drawings of pee-pees and wee-wees on the Cat in the Hat and the Five Chinese Brothers? Doesn't HE deserve better?
Look. If you think this is about overdue fines and missing books, you'd better think again. This is about that kid's right to read a book without getting his mind warped! Or: maybe that turns you on, Seinfeld; maybe that's how y'get your kicks. You and your good-time buddies.
<div class="bg-[url(/img/mountains.jpg)] bg-fixed ...">
</div>
随容器滚动
使用 bg-local 工具使背景图像随容器和视口一起滚动：
滚动内容以查看背景图像随容器滚动
Because the mail never stops. It just keeps coming and coming and coming, there's never a let-up. It's relentless. Every day it piles up more and more and more. And you gotta get it out but the more you get it out the more it keeps coming in. And then the barcode reader breaks and it's Publisher's Clearing House day.
<div class="bg-[url(/img/mountains.jpg)] bg-local ...">
</div>
随视口滚动
使用 bg-scroll 工具使背景图像随视口滚动，但不随容器滚动：
滚动内容以查看背景图像固定在容器中
Because the mail never stops. It just keeps coming and coming and coming, there's never a let-up. It's relentless. Every day it piles up more and more and more. And you gotta get it out but the more you get it out the more it keeps coming in. And then the barcode reader breaks and it's Publisher's Clearing House day.
<div class="bg-[url(/img/mountains.jpg)] bg-scroll ...">
</div>
响应式设计
在 background-attachment 工具前加上像 md: 这样的断点变体，以便只在中等屏幕尺寸及以上应用该工具：
<div class="bg-local md:bg-fixed ...">
</div>
在 变体文档 中了解更多关于使用变体的信息。