body {
    background: #747474;
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    padding: 40px 50px;
    background: #fff;
    height: 100%;
}

#play-again {
    display: block;
    margin-top: 8px;
}