#green_channel{
margin-left:auto;
}
.list{
    width: 1.2em;
    font-size: 1.7em;
    font-weight: 600;
    position: fixed;
    left: 0px;
    top: 20%;
    padding: 10px;
    background: 10px;
    color:white;
}



.show{
display: block;
}

.hidden{
display: none;
}
.h-center{
        display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}