Creating a fixed navigation bar in CSS involves using the position property to fix the navigation bar at the top of the viewport. This is commonly done for a better user experience, where the navigation remains visible as the user scrolls down the page.

Syntax:

/* Style for the navigation bar */
.navbar {
    background-color: #333;
    padding: 10px;
    color: white;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    /* Optional: Adjust z-index to control the stacking order */
}

Features:

• position: fixed; Fixes the position of the navigation bar relative to the viewport.
• top: 0;: Positions the fixed element at the top of the viewport.
• width: 100%; Makes the navigation bar span the entire width of the viewport.
• z-index: 1000; (Optional) Adjusts the stacking order to control visibility, especially when overlapping with other elements.