<body>
<link rel="stylesheet" href="basics.css">
<style>
    .dropzone {
        width: 200px;
        height: 200px;
        background: #eee;
        margin: 20px;
        padding: 20px;
        border: 1px solid #ccc;
        position: absolute;
    }
    #zone-1 {
        top: 120px;
    }
    #zone-2 {
        top: 120px;
        left: 250px;
    }
    #zone-3 {
        top: 370px;
    }
    #zone-4 {
        top: 370px;
        left: 250px;
    }
    #zone-1.ds-dropzone-ready {
        background: #cf