#content_videobox {
    margin-top: 0px;
    margin-left: 15px;
    width: 0px;
    height: 10px;
    background: url('../medias/images/videobox_normal.png') no-repeat center center;
    background-size: 670px 269px;
}

#content_videobox_firstcolumn {
    width: 1px;
    height: 270px;
    text-align: center;
}

#content_videobox_iframe {
    width: 478px;
    height: 269px;
    margin-top: 1px;
}

#content_videobox_secondcolumn {
    width: 175px;
    text-align: center;
    display: inline-block;
    margin-top: 6%;
    text-shadow:
        -1px -1px 0 #6e002f,
        1px -1px 0 #6e002f,
        -1px 1px 0 #6e002f,
        1px 1px 0 #6e002f;
    position: relative;
    right: -100%; /* Start off-screen to the left */
    animation: slide-in 0.8s forwards; /* Animation to slide in */
}

@keyframes slide-in {
    from { right: -100%; }
    to { right: 0; }
}