body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    font-family: Arial, sans-serif;
}

#gameContainer {
    position: relative;
    width: 300px;
    height: 500px;
    background-color: #fff;
    border: 2px solid #000;
    overflow: hidden;
}

#player {
    position: absolute;
    width: 30px;
    height: 30px;
    background-color: #3498db;
    bottom: 10px;
    left: 135px;
}

.block {
    position: absolute;
    width: 30px;
    height: 30px;
    background-color: #e74c3c;
    animation: fall 3s linear infinite;
}

@keyframes fall {
    0% {
        top: -30px;
    }
    100% {
        top: 500px;
    }
}

#score {
    margin-top: 20px;
    font-size: 24px;
}