html, 
body {
    background: linear-gradient(rgb(241, 241, 255), rgb(250, 235, 237));
    height: 100vh;
    width: 100vw;
}

.canvas {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0;
    width: 100vw;
}

#eyes_canvas {
    width: 600px;
    height: 600px;
    margin: 40px;
}

#start_button {
    width: 100px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 40px;
}