update nav bar

courses/react-js/begginer-level/intro-to-react/lesson_3.md

@@ -125,7 +125,7 @@ console.log('Hello, Node.js!');
 
 Save the file and open a terminal or command prompt in the same directory. Run the following command to execute the JavaScript code using Node.js:
 
-```bash title="Run hello.js with Node.js"
+```bash
 node hello.js
 ```
 

docusaurus.config.js

@@ -109,7 +109,8 @@ const config = {
                 value: `<div class="dropdown">
                 <a class="dropbtn" href="/docs/"> Tutorials </a>
                 <div class="dropdown-content">
-                  <a href="/docs/category/html/">HTML, </a>
+                  <a href="/docs/category/html/" class="nav__icons" > <img src="/icons/html-5.svg" alt="HTML" /> </a>
+                  <a href="/docs/" class="nav__icons" > <img src="/icons/css.svg" alt="CSS" /> </a>
                   <a href="/docs/category/javascript/">JavaScript, </a>
                   <a href="/docs/category/react/">React</a>                  
                 </div>

src/css/custom.css

@@ -316,4 +316,9 @@ table, tr, td, th {
 .dropdown-content {
   min-width: 100px;
   margin: 2px 5px;
+}
+
+.nav__icons img {
+  width: 30px;
+  height: 30px;
 }