Add navigation section to index.html and links.html

- Introduced a new navigation container in both index.html and links.html for improved site navigation.
- Added links to Home and Links pages with associated images for better user experience.
- Updated CSS to style the new navigation elements, ensuring they are visually appealing and functional.

style.css

@@ -86,4 +86,17 @@ a {
 ul li::marker {
     color: white; /* Or any other color value (e.g., hex code, RGB) */
   }
-  
+.nav-item {
+    height: 100px;
+    width: auto;
+    image-rendering: pixelated;
+    text-align: center;
+    position: sticky;
+}
+.nav-container {
+    display: block;
+    position: absolute;
+    text-align: center;
+    top: 20px;
+    left: 40px;
+}