.prototype_div {
    position: relative;
    width: 660px;
    height: 400px;
    background-color: "gray";
}

.prototype {
    position: absolute;
    margin: 0px;
    line-height: 1.2;
    font-family: Gill Sans, Arial Narrow, Arial;
}

.prototype_title {
    position: absolute;
    top: 200px;
    margin-left: auto;
    margin-right: auto;
    left: 0;
    right: 0;
    text-align: center;
    font-family: Helvetica, Arial;
    font-size: 36px;
    color: #666;
}

.prototype_img { /* used for the play arrow overlaid */
    left: 256px;
    top: 100px;
    position: absolute;
    display: block;
}

.prototype_math { /* used for math text in both the ticker and on the main prototype */
    font-family: Times New Roman;
}

.pointer {
    position: absolute;
    margin: 0px;
    line-height: 1;
    color: red;
}

.ticker {
    position: absolute;
    margin: 0px;
    top: 0px;
    height: 30px;
    background: #ddd;
    left: 0px;
    padding-left: 2%;
    padding-right: 2%;
    padding-top: 3px;
    width: 96%;
    overflow: hidden;
}

.ticker-text {
    display: inline-block;
    font-family: Gill Sans, Arial Narrow, Calibri, Arial;
    font-size: 22px;
    white-space: nowrap;
    line-height: 1.2;
}