css margin 0 code example
Example 1: margin 0 auto
Specifying 0 tells the browser to set the top and bottom margin to 0.
Specifying auto tells the browser to automatically determine the left
and right margins equally.
It's the same as:
margin-top:0;
margin-bottom:0;
margin-left:auto;
margin-right:auto;
Example 2: css code for margin
body {
margin: 0px;
}