.box_pdf{display: block;margin:-478px auto 380px auto;position: relative;}
.box_pdf a{display: block;margin:0 auto;padding:0;height: 110px;width: 560px;}

.videoWrap{
    display: block;
    margin: 0 auto;
    padding:0;
    width: 100%;
    max-width: 390px;
}
.videoWrap video{
    display: block;
    margin: 0 auto;
    padding:0;
    width: 100%;
}
/*
.videoWrap{
    padding-top: 56.25%;
    width: 100%;
    position: relative;
}

.videoWrap video{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
}
*/


@media screen and (max-width: 800px) {
    .box_pdf{display: block;margin:-87% auto 60% auto;position: relative;}
    .box_pdf a{display: block;margin:0 auto;padding:0;height:22vw;width:84%; }
}
@media screen and (max-width:390px) {
    .box_pdf{margin:-91% auto 60% auto;}
}