* { margin: 0; padding: 0; }

h1 { font-size: 120%; }

div.playground {
    clear: both;
    width: 95%;
    border: 3px solid #aaa;
    background: #000;
    height: 200px;
    margin: 10px 0;
    position: relative;
    color: #fff;
/*    padding: 10px;*/
}
div.playground p.note {
    padding: 10px;
    color: #060;
}

div.usecase * { margin: 0; padding: 0; }

div.phoneframe {
    background: url(phone.png) no-repeat left top;
    margin: 10px auto;
    width: 309px; height: 649px;
    position: relative;
    clear: both;
}
div.usecase {
    position: absolute;
    left: 31px; top: 79px;
    clear: both;
    width: 241px;
    height: 360px;
/*    border: 3px solid #f55;*/
    background: #fff;
    position: relative;
    color: #000;
    overflow: hidden;
/*    overflow-y: auto;*/
    font-family: helvetica;
}
div.usecase p {
    margin: 12px 0;
}