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

.game-container {
    background-color: #fff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 800px;
    width: 100%;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.game-area {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
}

.player-area, .dealer-area {
    flex: 1;
    margin: 0 10px;
}

h2 {
    color: #3498db;
}

.cards {
    min-height: 100px;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 10px;
}

.controls {
    margin-top: 20px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    margin: 0 5px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

#message {
    margin-top: 20px;
    font-weight: bold;
    color: #e74c3c;
}

.card {
    display: inline-block;
    width: 50px;
    height: 70px;
    background-color: #fff;
    border: 1px solid #000;
    border-radius: 5px;
    margin: 5px;
    text-align: center;
    line-height: 70px;
    font-size: 20px;
}

.rules {
    text-align: left;
    margin-top: 20px;
    border-top: 1px solid #ddd;
    padding-top: 20px;
}

.rules h3 {
    color: #2c3e50;
}

.rules ul {
    padding-left: 20px;
}

.rules li {
    margin-bottom: 5px;
}