clear-The idle Process

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clear元素清除浮动float

clear元素用来清除左边或者右边或者两边的浮动元素(float) 比如： <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> <style> img { float:left; border:1px solid red; } p.clear { clear:both; } </style> </head> <body> <img src="logocss.gif" width="95" height="84" /> <p>This is some text. This is some text. This is some text. This is some text. This is some text. This is some text.</p> <p class="clear">This is also some text. This is also some text. This is also some text. This is also some text. This is also some text. This is also some text.</p> </body> </html> 第一段p没有指定clear，因此左边会有图片，而第二段class是clear，clear: both，清除了两边的浮动元素，左右都不会出现浮动元素，所以它自己占单独的行，不和其他浮动元素占一行。