/*main*/

.jb_box {
    margin: auto;
}

video {
    position: fixed;
    min-width: 100%;
    min-height: 120%;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: auto;
    height: auto;
    z-index: -10;
    top: -70px;
    max-width: 1200px
}


/*테블릿 PC - width : 960px 이상 999px 이하*/


/*mobile - width :639px 이하 */

@media screen and (min-width:600px) and (max-width:839px) {
    video {
        min-height: 101%;
        top: -100px;
    }
}

@media screen and (max-width:599px) {
    video {
        top: -100px;
        height: 112%;
    }
}