.demo {
    position: relative;
    background-color: #FFF;
    border: 1px solid #F5F5F5;
/*    border: 1px solid #BBB;
    border-radius: 4px;
    box-shadow: 2px 3px 2px rgba(0, 0, 0, 0.2), -2px 3px 2px rgba(0, 0, 0, 0.2); */
    padding-top: 3px; /* needed to avoid crop of rounded corners */
    margin: 10px 0px 10px 0px;
}

.demo_message {
    position: absolute;
    width: calc(100% - 20px);
    height: 70px;
    top: calc(100% - 120px);
    left: 0px;
    text-align: center;
    color: #7F7F7F;
    padding: 0 10px 0 10px;
    font-size: 18px;
}

.demo_button {
    background-color: #BBB;
    color: #FFF;
    height: 40px;
    width: 50px;
    border: 1px solid #999;
    border-radius: 4px;
    font-size: 24px;
    -webkit-transition-duration: 0.1s; /* Safari */
    transition-duration: 0.1s;
    box-shadow: 2px 3px 2px rgba(0, 0, 0, 0.2), -2px 3px 2px rgba(0, 0, 0, 0.2);
}

.demo_button:hover {
    background-color: #55f;
}

.demo_button_container {
    position: absolute;
    top: calc(100% - 50px);
    height: 40px;
    font-size: 18px;
}

.demo_icon {
    border: 1px solid #777;
    margin-left: -1px;
    margin-right: -1px;
    background-color: #eee;
    color: #777;
    font-family: "arial narrow";
    font-size: 20px;
    position: absolute;
}