Center absolutely positioned DIV using CSS
I’ve seen people write javascript in order to centre an absolutely positioned div. All that is needed is the following
snippet of CSS.
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.notice
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{
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position: absolute;
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width: 400px;
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top: 0px;
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left: 50%;
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margin-left: -200px;
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}
Basically, left: 50% means the div is centered, but from the top left corner of the div, to fix this margin-left should be half the width and negative.
The same technique can be applied to show absolutely positioned div footer that is always visible, just set top: 100% and margin-top to be the same as the height of the element.
