Difference between padding and margin?

Question

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what's the difference between padding and margin?

Well, what's the difference? I haven't really understand it...

Answer 1

At it's simplest, padding = inside spacing, margin = outside spacing.

Try it.

<div style="border:1px solid red;padding:8px;margin:8px;width:200px;">TEST</div>

The width of this element will be 2 (border) + 16 (margin) + 16 (padding) + 200 (declared width) for a total 234px.