.s2,
.s3{
    position: relative;
    bottom: 2px;
    right: 2px;
}

.s1{
    background-color: #f00; /*shadow color*/
    color: inherit;
    margin-left: 4px;
    margin-top: 4px;
}

.s2{
    background-color: #f0f; /*shadow color*/
    color: inherit;
}

.s3{
    background-color: #fff; /*background color of content*/
    color: #000; /*text color of content*/
    border: 1px solid #000; /*border color*/
    padding: .5em 2ex;
}