* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.game-container {
    text-align: center;
}

#game-area {
    width: 400px;
    height: 400px;
    border: 2px solid #333;
    margin: 20px auto;
    position: relative;
    background-color: white;
}

#target {
    width: 30px;
    height: 30px;
    background-color: #ff4444;
    position: absolute;
    cursor: pointer;
    transition: all 0.2s ease;
}

#target:hover {
    background-color: #ff6666;
}

#score, #timer {
    font-size: 24px;
    margin: 10px;
}

#start-btn {
    padding: 10px 20px;
    font-size: 18px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#start-btn:hover {
    background-color: #45a049;
}