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Questions about the margin top percent value

Source: Internet
Author: User
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Don't want to say how bad mood today!

More than 9 start to find a "bug", the requirement is to adjust the position of a div dynamically depending on the height of the screen, the code is probably the case.

 <div  style=   "margin-top:25%;   margin-left:25%;   width:50px;   height:50p;   Background-color:yellow; " >  </DIV>



Demonstrate:


then I found, "when the width of the window changes, margin-top change, change!" !!! , adjusted a night, asked a lot of front-end group, paste the code, unexpectedly no one knows why!!!

Finally find a sentence:

' Margin-top ', ' Margin-bottom '
Percentages:refer to width of containing block

Yes, that's right, Margin-top is set as a percentage, only with the parent container width!!! Width!!! Who can tell me why is the width!!! Deeply moved by his ignorance. Well! Come on!

Questions about margin top percent value

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Related Keywords:
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