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盒子模型

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文档流

研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。
Lorem Ipsum is simply dummy text of the printing and typesetting industry
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研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。
Lorem Ipsum is simply dummy text of the printing and typesetting industry
1234567890
研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。
Lorem Ipsum is simply dummy text of the printing and typesetting industry
1234567890

content-box
border-box

content-box border-box

浮动

content-box
border-box
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

清除浮动

content-box
border-box

flex

flexyboxes
1研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。
2研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。研表究明,漢字的序順並不定一能影閱響讀,比如當你完看這句話後,才發這現里的字全是都亂的。

flex - 左右固定,中自适应