#mainVideo button.vjs-skip-intro-button {
    position: absolute;
    top: 50px;
    right: 0;
    background-color: #000;
    border-color: #CCC;
    border-width: 2px 0 2px 2px;
    border-style: solid;
    color: #DDD;
    padding: 15px 20px;
    cursor: pointer;
    font-size: 1.5em;
    z-index: 9999;
    opacity: 0.5;
}

#mainVideo button.vjs-skip-intro-button:hover {
    border-color: #FFF;
    color: #FFF;
    opacity: 1;
}