body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: #f2f2f2;
}

#game {
    width: 800px;
    height: 200px;
    background: white;
    border: 2px solid black;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

#dino {
    width: 40px;
    height: 40px;
    background: black;
    position: absolute;
    bottom: 0;
    left: 50px;
}

#cactus {
    width: 25px;
    height: 50px;
    background: green;
    position: absolute;
    bottom: 0;
    right: -30px;
}

.hidden {
    display: none;
}

#gameOver {
    font-size: 20px;
    color: red;
    margin-top: 10px;
}

#score {
    font-size: 18px;
}