/**B"H**/
.hidden{
    display:none

}

#BH {
    
    color: #fff;
    position:fixed;
    padding:12px;
    border-radius:8px;
    left:13px;
    top:13px;
    background-color: black;
    transition:box-shadow 0.3s ease;
}

#BH a {
    color:inherit;
}

#BH:hover,
#BH a:hover {
  
    background: white;
    color:black;
}