body {
    background: #000 !important;
}
.boxW {
    mix-blend-mode: multiply;
    padding-top: 50px;
    position: absolute;
    margin: auto;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 1;
    max-width: 640px;
}
.boxV {
    padding-top: 50px;
    margin: auto;
    max-width: 720px;
}
.world {
    margin: auto;
    width: 640px;
    pointer-events: none;
    padding-top: 36px;
}
#video {
    height: 540px;
    width: 100%;
}
@media (max-width: 480px) {
    .boxW {
        padding-top: 78px;
        max-width: 288px;
    }
    .boxV {
        padding-top: 50px;
        max-width: 375px;
    }
    iframe {
        max-width: 375px;
        height: 281.25px;
    }
    .world {
        margin: auto;
        width: 288px;
        padding-top: 8px;
    }
}
@media (max-height: 480px) {
    .fit {
        scale: 70%;
    }
    #return {
        scale: 70%;
    }
    .boxW {
        padding-top: 0px;
    }
    .boxV {
        padding-top: 0px;
    }
}
@media (min-height: 480px) and (min-width: 480px) {
    .boxW {
        pointer-events: none;
    }
}