/* Reset default margin */
body {
    margin: 0;
    font-family: Arial, sans-serif;
}

/* =========================
   Header Styling
========================= */
header {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px;
}

/* =========================
   Two Column Layout
========================= */

/* Navigation */
nav {
    width: 25%;
    float: left;
    background-color: #f4f4f4;
    padding: 20px;
    box-sizing: border-box;
    position: fixed;      /* Fixed position */
    height: 100%;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

/* Main Content */
main {
    width: 70%;
    float: right;
    margin-left: 25%;
    padding: 20px;
    box-sizing: border-box;
}

/* =========================
   Footer Styling
========================= */
footer {
    clear: both;
    background-color: #333;
    color: white;
    text-align: center;
    padding: 15px;
}

/* =========================
   Link Styling
========================= */
nav a {
    text-decoration: none;
    color: black;
    display: block;
    margin-bottom: 10px;
}

/* Hover Effect */
nav a:hover {
    color: blue;
}