Centering Example from this article

The CSS

div.section {
    width: 600px;
    height: 200px;
    border: 1px solid #A6A6A6;
    padding: 15px;
}

div.blob {
    width: 151px;
    height: 151px;
    background-image: url('images/blob.png');
}

div#blob1 {
    margin: 15px auto;
}

div#blob2 {
    position: relative;
    left: 50%;
    top: 15px;
    margin-left: -75px;
}

div#blob3 {
    position: absolute;
    left: 50%;
    top: 200px;
    margin-left: -75px;
}
			

Polyesterhat's Blog