html,body{
    margin: 0px;
}
canvas{
    width: 100%;
    height: 100%;
}

#soundbtn{
    position: absolute;
    bottom: 4%;
    right: 3%;
    background: gray;
    padding: 1rem;
    cursor: pointer;
    user-select: none;
}
#soundbtn:hover{
    background-color: brown;
    transform: scale(1.5);
}