body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f6f9;
    line-height: 1.6;
}

header {
    background-color: #1e3d59;
    color: white;
    padding: 20px;
    text-align: center;
}

nav {
    background-color: #16324f;
    padding: 12px;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-size: 18px;
}

nav a:hover {
    text-decoration: underline;
}

section {
    background: white;
    margin: 20px;
    padding: 25px;
    border-radius: 8px;
}

h2 {
    color: #1e3d59;
}

img {
    max-width: 100%;
    display: block;
    margin: 15px auto;
    border-radius: 8px;
}

table {
    width: 90%;
    margin: 20px auto;
    border-collapse: collapse;
}

table, th, td {
    border: 1px solid #333;
}

th, td {
    padding: 10px;
    text-align: center;
}

iframe {
    width: 90%;
    height: 350px;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
}

footer {
    background-color: #1e3d59;
    color: white;
    text-align: center;
    padding: 15px;
}
form {
    max-width: 500px;
    margin: auto;
}

input, textarea {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #aaa;
    font-size: 15px;
}

button {
    background: #1e3d59;
    color: white;
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #16324f;
}