摘要： 转载http://paranimage.com/css-overflow-attribute/检索或设置当对象的内容超过其指定高度及宽度时如何管理内容。所有对象的默认值是 visible ，除了 textarea 对象和 body 对象的默认值是 auto 。设置 textarea 对象此属性值为 hidden 将隐藏其滚动条。overflow属性有四个值：visible (默认), hidden, scroll, 和auto。同样有两个overflow的姐妹属性overflow-y 和overflow-x，它们很少被采用。Visible如果你不设置overflow属性，则默认的overflo 阅读全文

摘要： 转载http://css-tricks.com/795-all-about-floats/All About Floatsby: Chris CoyierJul 8 2009119What is "Float"?Float is a CSS positioning property. To understand its purpose and origin, we can look to print design. In a print layout, images may be set into the page such that text wraps around t 阅读全文