Untitled

body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #70c5ce;
    font-family: Arial, sans-serif;
}

#game-container {
    position: relative;
    width: 400px;
    height: 600px;
    background-color: #fff;
    overflow: hidden;
    border: 2px solid #000;
}

#bird {
    position: absolute;
    width: 30px;
    height: 30px;
    background-color: #ff0;
    border-radius: 50%;
    top: 50%;
    left: 50px;
}

.pipe {
    position: absolute;
    width: 50px;
    background-color: #008000;
}

.pipe-top {
    top: 0;
}

.pipe-bottom {
    bottom: 0;
}

#score {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 20px;
    color: #000;
}

#game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #000;
}

.hidden {
    display: none;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #008cba;
    color: white;
    border: none;
    border-radius: 5px;
}