Everything you should know about CSS3 - CSS3.infoThe CSS Working Group has reached an impasse on the issue of percentage margins (and padding) in flex and grid layout, and needs your input to help decide it. Option 1: Flex and grid items resolve percentages in margin-top and margin-bottom against the height of the element’s containing block. Option 2: Flex and grid items resolve percentages in margin-top and margin-bottom against the width of th
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