# CSS盒模型详解

CSS盒模型，多么专业的一个术语。但你不要被它吓到，不过就是一些CSS基本属性的应用而已。

## 块级盒的默认宽度

The lesson here being that the default width of a box isn’t really 100% but a less tangible “whatever is left”. This is particularly valuable to know, since there are lots of circumstances where it is immensely useful to either set or not set a width.

## 亲眼目睹一下

 * { border: 1px solid red !important; }

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