body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
}

.key-box {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 15px;
    margin: 10px 0;
    background: #fafafa;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.key-box pre {
    margin: 0;
    font-size: 0.9em;
    word-wrap: break-word;
    overflow-x: auto;
    max-width: 80%;
}

.copy-button {
    background: #007BFF;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.copy-button:hover {
    background: #0056b3;
}

.key-name {
    margin: 20px 0 10px;
    font-size: 1.0em;
    color: #007BFF;
    font-weight: bold;
}