Update index.html

index.html

@@ -13,6 +13,21 @@ <h1>Rails Girls Guides</h1>
     <div class="workshop-image"></div>
   </div>
 
+
+               <div class="nav-controls">
+                    <div class="theme-switcher">
+                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"></circle><line x1="12" y1="1" x2="12" y2="3"></line><line x1="12" y1="21" x2="12" y2="23"></line><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line><line x1="1" y1="12" x2="3" y2="12"></line><line x1="21" y1="12" x2="23" y2="12"></line><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line></svg>
+                        <label class="switch">
+                            <input type="checkbox" id="theme-toggle-checkbox" checked>
+                            <span class="slider"></span>
+                        </label>
+                        <svg class="icon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path></svg>
+                    </div>
+                </div>
+            </div>
+
+
+
   <div class="column column-40">
     <h2>Guides in other languages</h2>
     <ul>