html {
    overflow: hidden;
}

canvas{
    width:100%;
}

img {
    visibility: hidden;
}

.button {
    visibility: hidden;
    background-color: #000000;
    border: none;
    box-shadow: 0 9px#505050;
    padding: 30px;
    text-align: center;
    font-size: 28px;
    }
    
    .button:hover {
    background-color: #3F3F3F;
    }
    
    .button:active {
    box-shadow: 0 5px #3D3D3D;
    transform: translateY(5px);
    }
    
    .pressed{
    box-shadow: 0 5px #3D3D3D;
    transform: translateY(5px);    
    }
    
    .red {
    color: #FF0000;
    }
    
    .green {
    color: #00FF00;
    }
    
    .blue {
    color: #0000FF;
    }
    
    .yellow {
    color: #FFFF00;
    }
    
    .round {
    border-radius: 50%;
    }