body { 
        background: #bef;
        font: 14px arial;
    }
    body, h2, h3 { margin: 8px; }
    /* h2, div { margin-bottom: 16px; } */
    li {
        width: 280px;
        list-style: none;
        margin: 8px 0;
        cursor: pointer;
    }
    li img { 
        width: 90%;
        background-color: black;
        padding: 0 5%;
    }
    li span {
        display: inline-block;
        vertical-align: top;
        text-align: center;
        margin: 8px;
    }
    li, iframe, div {
        display: inline-block;
    }
    iframe {
        width: 560px; height: 315px;
    }
    pre { 
        margin: 2px; 
        font-size: small;
    }
    #out {
        font-size: larger;
    }