body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: Arial, sans-serif;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

#crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 24px;
    pointer-events: none;
}

#score, #health {
    position: absolute;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border-radius: 5px;
}

#score {
    top: 10px;
    left: 10px;
}

#health {
    top: 10px;
    right: 10px;
}

.instructions {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    max-width: 400px;
}

.instructions button {
    padding: 10px 20px;
    margin-top: 15px;
    background-color: #4CAF50;
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 5px;
}

.instructions button:hover {
    background-color: #45a049;
}