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CSS How to Make a Website CSS: Cascading Style Sheets Review: CSS: Cascading Style Sheets

Different Values for the Margin Declaration

Why is there sometimes two values given for this declaration instead of one? That is to say, for example, why is it sometimes okay to just put down something like "margin: 0;" instead of having to put down something like "margin: 0 auto;"? Won't both of these values do the same thing or will each do something different?

1 Answer

With margin tags, it works like this;

Margin: (Top) (Right) (Bottom) (Left); Example; Margin: 50px 25px 25px 50px;

Margin: (Top) (Right & Left) (Bottom); Margin: 50px 25px 50px;

Margin: (Top & Bottom) (Right & Left); Margin: 50px 25px;

Margin: (All margins); Margin: 50px;

So when you set Margin: 0 auto;

Its actually setting your top and bottom margins to 0 and your left and right margins to "auto" which center positions your div horizontally.

Also Auto doesnt = 0. Auto means your browser is auto calculating your margin.