body {
    position: relative;
    bottom: 19px;
}
h1 {
    text-align: center;
}
canvas {
    position: absolute;
    left: 50%;
    top: 55%;
    transform: translate(-50%, -50%);
    border: 2px solid #000;
}
button.replay:hover {
    cursor: pointer;
}
button.replay {
    display: block;
    margin: 0 auto;
    margin-top: 650px;
    color: rgba(255, 255, 255, 0.808);
    background-color: #476e9e;
    padding: 6px 15px;
    border-radius: 20px;
}