body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

#gameCanvas {
    display: block;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

#runButton {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    padding: 15px 30px;
    font-size: 18px;
    font-family: Georgia, serif;
    background-color: rgba(255, 255, 255, 0.9);
    border: 2px solid #333;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
    touch-action: manipulation;
}

#runButton:hover {
    background-color: rgba(255, 255, 255, 1);
}

#runButton:active {
    background-color: rgba(230, 230, 230, 1);
    transform: translateX(-50%) translateY(2px);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}