html {
    background-color: #DEDEDE;
    margin: 0;
    height: 100%;
}

body {
    max-width: 55rem;
    min-height: 100%;
    margin: auto;
    background-color: white;
    padding: 1rem;
    box-sizing: border-box;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #333333;
    box-shadow: 0rem 0rem 1rem gray;
}

.game {
}

#canvas {
    border: 1px solid gray;
    display: block;
    margin: auto;
}

.ad-container {
    text-align: center;
}