body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #555555;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

header {
    background-color: #333;
    color: white;
    text-align: center;
    vertical-align: center;
    height: 28px;
    font-size: 11px;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    height: 20px;
    font-size: 14px;
    vertical-align: center;
}

footer a {
    color: #9cf;
}

h1 {
    margin: 0;
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}
#gameContainer {
    position: relative;
}

canvas {
    display: block;
    border: 1px solid black;
    background-size: cover;
    background-position: center;
}

#gameInfo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px;
    box-sizing: border-box;
    overflow-y: auto;
    display: block;
}
#gameInfo h3 {
    text-align: center;
}
#startButton {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 24px;
    padding: 10px 20px;
}