body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #f5f5f5;
}

header {
    background-color: #004080;
    color: white;
    padding: 20px;
    text-align: center;
}

main {
    max-width: 800px;
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
}

h1 {
    color: #ffffff;
}

h2,
h3 {
    color: #003366;
}

hr {
    margin: 40px 0;
}

.btn-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.btn {
    background-color: #0066cc;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.btn-option {
    background-color: #0066cc;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 15px;
}

.btn:hover {
    background-color: #004c99;
}