*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#canvas1{
    background:#000;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);

}
#controls{
    position: absolute;
    padding: 10px;
    border: 2px solid #fff;
    width: 250px;
    background: rgba(255, 255, 255, 0.15);
}
button{
    padding: 10px 40px;
    width: 225px;
    font-size: 1rem;
    border: none;
}

label,input{
    color: #fff;
    font-size:20px ;
}