background-attachment
用于控制背景图片在滚动时行为的工具类。
快速参考
| 类 | 属性 |
|---|---|
bg-fixed | background-attachment: fixed; |
bg-local | background-attachment: local; |
bg-scroll | background-attachment: scroll; |
示例
固定背景图片
使用 bg-fixed 工具类将背景图片相对于视口固定：
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.
<!-- [!code classes:bg-fixed] -->
<div class="bg-[url(/img/mountains.jpg)] bg-fixed ...">
<!-- ... -->
</div>随容器滚动
使用 bg-local 工具类让背景图片随容器和视口一起滚动：
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.
<!-- [!code classes:bg-local] -->
<div class="bg-[url(/img/mountains.jpg)] bg-local ...">
<!-- ... -->
</div>随视口滚动
使用 bg-scroll 工具类让背景图片随视口滚动，但不随容器滚动：
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.
<!-- [!code classes:bg-scroll] -->
<div class="bg-[url(/img/mountains.jpg)] bg-scroll ...">
<!-- ... -->
</div>响应式设计
使用 md: 等断点变体作为 background-attachment 工具类的前缀，即可只在中等屏幕尺寸及以上应用该工具类：
<div class="bg-local md:bg-fixed ...">
<!-- ... -->
</div>更多关于变体的用法，请参阅变体文档。