body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #fafafa;
    color: #333;
}
header {
    position: relative;
    text-align: center;
    color: #ffffff;
}
header img {
    width: 100%;
    height: auto;
    display: block;
}
header .overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 8px;
    max-width: 90%;
}
header h1 {
    margin: 0;
    font-size: 2.5em;
}
nav {
    background-color: #205074;
    padding: 10px 0;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
nav li {
    margin: 0 10px;
}
nav a {
    color: #ffffff;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    font-weight: bold;
}
nav a:hover {
    background-color: #163d59;
}
main {
    max-width: 900px;
    margin: 20px auto;
    padding: 0 20px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
main h2 {
    color: #205074;
    margin-top: 20px;
}
main h3 {
    color: #205074;
    margin-top: 15px;
}
main p {
    margin-bottom: 16px;
}
main ul {
    margin-bottom: 16px;
    padding-left: 20px;
}
main li {
    margin-bottom: 8px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}
th {
    background-color: #f2f2f2;
}
form {
    max-width: 600px;
    margin: 20px auto;
}
form label {
    display: block;
    margin-top: 10px;
    font-weight: bold;
}
form input,
form textarea {
    width: 100%;
    padding: 8px;
    margin-top: 4px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
form input[type="submit"] {
    background-color: #205074;
    color: #ffffff;
    border: none;
    padding: 10px 15px;
    margin-top: 15px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 1em;
}
form input[type="submit"]:hover {
    background-color: #163d59;
}
footer {
    background-color: #205074;
    color: #ffffff;
    padding: 20px;
    text-align: center;
    margin-top: 40px;
}
footer a {
    color: #ffffff;
    text-decoration: underline;
    margin: 0 10px;
}
footer a:hover {
    color: #dce7f1;
}