#btnSound, #btnPlay, #btnPause{
    width:calc(var(--margin)*4);
    height:calc(var(--margin)*4);
    display:flex;
    justify-content: center;
    align-items: center;
    visibility: hidden;
    background-repeat: no-repeat;
    background-size: cover;
}
#btnSound{
    position: absolute;
    visibility: visible;
    background-image: url(../assets/btn_sound.png);
}
#btnPause{
    background-image: url(../assets/btn_pause.png);
}
#btnPlay{
    background-image: url(../assets/btn_play.png);
}
#videoMenu{
    flex-direction: row;
    width:100%;
    height: 47%;
    /* bottom: 0; */
    position: absolute;
    /* background-color: aquamarine; */
    justify-content: center;
}
#videoContainer{
    display: flex;
    justify-content: flex-end;
}