demo.css

body.advanced {
    background: #fff url('grid.png') 0 0 repeat scroll
}

.draggable {
    -moz-user-select: -moz-none;
    -khtml-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    position: absolute;
    cursor: pointer;
    background-color: #fff;
    margin: 0;
    padding: 0;
    color: #fff;
    text-align: center
}

#green {
    background-color: green;
    height: 350px;
    left: 0;
    top: 0;
    width: 350px;
}

#blue {
    background-color: blue;
    height: 300px;
    left: 25px;
    top: 25px;
    width: 300px;
}

#red {
    background-color: red;
    height: 250px;
    left: 50px;
    top: 50px;
    width: 250px;
}

#orange {
    background-color: orange;
    height: 200px;
    left: 75px;
    top: 75px;
    width: 200px;
}

#magenta {
    background-color: magenta;
    height: 150px;
    left: 100px;
    top: 100px;
    width: 150px;
}

#yellow {
    background-color: yellow;
    color: red;
    height: 100px;
    left: 125px;
    top: 125px;
    width: 100px;
}

#lightgreen {
    background-color: lightgreen;
    height: 50px;
    left: 150px;
    top: 150px;
    width: 50px;
}

#info {
    height: 300px;
    position: absolute;
    right: 0;
    top: 0;
    width: 500px;
    z-index: -1;
}