其实前面的标准流和浮动流都很理解,就是定位不太好理解,特别是相对定位和绝对定位,很多刚开始学的同学不好区分。因此这里,小强老师和大家一起分享CSS定位的学习。通过我们前面的学习,我们网页布局方法:1.标准流(最稳定)2.浮动流(float其次)3.定位流(稳定性最后)定位是完全脱离标准流的一种布局方式。其实前面的标准流和浮动流都很理解,就是定位不太好理解,特别是相对定位和绝对定位,很多刚开始学的同学不好区分。因此这里,小强老师和大家一起分享CSS定位的学习。我们知道,定位都是和方位名词一起使用的,调整位置,大部分使用top,left,bottom,right配合使用的。首先我们看看定位的分类:
position:absolute;绝对定位和相对定位用的相对来说,是比较多的地方。绝对定位到底有什么特点,在这里小强老师,给大家总结一下。
那么这个盒子,加上绝对定位后,都是以浏览器的左上角为原点,所有的移动,也是以该原点来移动的。案例如图:预览后
预览后
如图:生成效果:
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疑难解答