*, ::before, ::after {
    box-sizing: border-box; 
    padding: 0; 
    margin: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(to right, #333, rgb(78, 77, 77)); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */

}

h1, .score {
    text-align: center;
    font-size: 40px;
    margin: 30px 0 50px;
    color: #f1f1f1;
}

canvas {
    background: #f1f1f1;
    display: block;
    margin: 0 auto;
    
}