第一周即将结束,《CSS权威指南》已近尾声,真心推荐,是本好书,会带来一些新的认识,比如说盒子模型。
如果想讨论讨论,欢迎评论,共同进步嘛,初来乍到,有何不妥,请多多指点。
据说CSS中最基础的一个重点,也就是最重点的一个基础,就是盒子模型,究竟什么是盒子模型?
本文中会提到的名词列在下面,如文章有其他不熟悉的词汇,请请求网络帮助。
1.正常流:正常文本从左向右、从上向下显示,称为正常流,本文一律在正常流下进行讨论,浮动和定位会让元素脱离正常流。
2.非替换元素:元素内容包含在文档中,如<p>、<h1>。
3. 替换元素:用作为其他内容占位符的元素,如<img>。
4. 块级元素:本文介绍块级元素的一些特征,从最基本的<div>、<p>元素开始。
5. 外边距(margin):默认值为0,可以为负数。
6. 边框(border):默认没有边框,宽度不能为负数。
7. 内边距(padding):默认值为0,不能为负数。
8. 宽度(width):默认值为auto,不能为负数,为内容宽度(不包括内边距)。
9. 高度(height):默认值为auto,不能为负数,为内容高度(不包括内边距)。
开篇第一图盗自百度百科。
这就是伟大的盒子模型,有什么特性,你猜。为了方便下文的观察,CSS噼里啪啦敲些东西。 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