Solve the IE6 3 pixel bug CSS notation _ experience Exchange

As long as the haslayout of IE is triggered, non-floating elements will have a layout. So, by using IE6 's unique hack rules, writing a style for it alone can fix this problem:
_zoom:1;
Margin-left:value;
_margin-left:value-3px;

Zoom is one of the IE trigger layout conditions because it is a CSS rule specific to IE, so use zoom.
MARGIN-LEFT:VALUE-3PX is a bug that fixes 3px in IE6.
Before the use of non-floating element also floating method to fix the bug, now we can try this new method!
Note: The preceding underscore is specifically addressed to the following versions of IE7 hack!

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