@media only screen and (min-width: 480px) {
        #main_youtube_banner {
            position: relative;
            display: block;
        }
        #main_youtube_banner * {
            -moz-box-sizing: border-box;
            -webkit-box-sizing: border-box;
            box-sizing: border-box;
        }
        #image_banner {
            z-index: 9;
            text-align: center;
            height: 100%;
        }
        .play_image {
            background: url('../img/play-black.png') 50% 50% no-repeat;
            opacity: 0.9;
            position: absolute;
            z-index: 10;
            left: 0;
            top: 0;
            background-size: 15%;
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
        .play_image_hover {
            background: url('../img/play-red.png') 50% 50% no-repeat;
            opacity: 1;
            position: absolute;
            z-index: 10;
            left: 0;
            top: 0;
            background-size: 15%;
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
    }
    @media only screen and (max-width: 479px) {
        #main_youtube_banner {
            position: relative;
            display: block;
        }
        #main_youtube_banner * {
            -moz-box-sizing: border-box;
            -webkit-box-sizing: border-box;
            box-sizing: border-box;
        }
        #image_banner {
            z-index: 9;
            text-align: center;
            height: 100%;
        }
        .play_image {
            background: url('../img/play-black.png') 50% 50% no-repeat;
            opacity: 0.9;
            position: absolute;
            z-index: 10;
            left: 0;
            top: 0;
            background-size: 10%;
            width: auto;
            height: auto;
            cursor: pointer;
        }
        .play_image_hover {
            background: url('../img/play-red.png') 50% 50% no-repeat;
            opacity: 1;
            background-size: 10%;
            position: absolute;
            z-index: 10;
            left: 0;
            top: 0;
            background-size: 10%;
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
    }