.image-drop-outer {
    padding: 10px;
    border: 1px solid #ccc;
}
.image-drop-zone {
    border: 2px dashed #bbb;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
    padding: 10px;
    text-align: center;
    color: #bbb;
    min-height: 100px;
}