个回答

• 智少飞

  2014-08-22 17:45:10

  @jeanneze 这题出的没有错 

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• 如沐春风kira

  2014-08-21 03:00:23

  http://www.w3.org/wiki/Floats_and_clearing

  自己看w3c上的解释，float改变了文档流的显示

  taken out of the flow and shifted to the left or right as far as possible.

  
  

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