CSS: Make two floating elements overlap

Question

I have two divs within a container. One floats left and one floats right. Both are about 60% as wide as the container and are designed such that they overlap in the middle (

Answer 1

You can only do that with positioning.

    
left
    
right


#container {
    width: 400px;
    background-color: #eee;
    position: relative;
}

#left {
    width: 250px;
    border: 1px solid #ccc;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 1;
}

#right {
    width: 250px;
    border: 1px solid #ccc;
    position: absolute;
    right: 0;
    top: 0;
    z-index: 2;
}