CSS – some useful style

.footer {
position: absolute;
bottom: 0;
height: 20px;
width: 100%;
}

.verticle-mid {
position: absolute;
top: 50%;
left: 50%;
height: 50px; /* always set absolute block’s height */
padding:180px 0px 0px 0px; /* or use padding to set height */
}

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Tools – HTML, JS, CSS

http://www.layoutit.com/build

http://jsfiddle.net/

http://css-tricks.com/