body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}

h1 {
    text-align: center;
}

.section {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}

pre {
    background: #e9ecef;
    padding: 10px;
    border-radius: 4px;
    overflow: auto;
}

input {
    padding: 10px;
    margin-right: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
    width: calc(100% - 120px);
    margin-bottom: 10px;
}