/* Page background */
body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f2f4f8;
    margin: 0;
    padding: 0;
}

/* Top banner */
header {
    background-color: #002b5c;
    color: white;
    padding: 20px;
    text-align: center;
}

/* Main content box */
.container {
    width: 85%;
    margin: 20px auto;
    background: white;
    padding: 25px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 6px;
}

/* Headings */
h1, h2 {
    color: #002b5c;
}

/* Links */
a {
    color: #0056b3;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Lists */
ul {
    margin-left: 20px;
}

/* Code blocks */
pre {
    background: #272822;
    color: #f8f8f2;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

/* Tables */
table {
    border-collapse: collapse;
    width: 100%;
    margin-top: 15px;
}

th, td {
    border: 1px solid #ccc;
    padding: 8px;
}

th {
    background-color: #002b5c;
    color: white;
}

/* Images */
img {
    display: block;
    margin: 15px auto;
    max-width: 100%;
    border-radius: 5px;
}

/* Footer */
footer {
    text-align: center;
    margin: 20px;
    color: gray;
}