diff --git a/src/components/Header.astro b/src/components/Header.astro
index b171d8b..6d8bad9 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -71,18 +71,22 @@ const { activeNav } = Astro.props;
           </svg>
         </LinkButton>
 
-        <button id="theme-btn" class="focus-outline" aria-label="switch theme">
-          <svg xmlns="http://www.w3.org/2000/svg" id="moon-svg"
-            ><path
-              d="M20.742 13.045a8.088 8.088 0 0 1-2.077.271c-2.135 0-4.14-.83-5.646-2.336a8.025 8.025 0 0 1-2.064-7.723A1 1 0 0 0 9.73 2.034a10.014 10.014 0 0 0-4.489 2.582c-3.898 3.898-3.898 10.243 0 14.143a9.937 9.937 0 0 0 7.072 2.93 9.93 9.93 0 0 0 7.07-2.929 10.007 10.007 0 0 0 2.583-4.491 1.001 1.001 0 0 0-1.224-1.224zm-2.772 4.301a7.947 7.947 0 0 1-5.656 2.343 7.953 7.953 0 0 1-5.658-2.344c-3.118-3.119-3.118-8.195 0-11.314a7.923 7.923 0 0 1 2.06-1.483 10.027 10.027 0 0 0 2.89 7.848 9.972 9.972 0 0 0 7.848 2.891 8.036 8.036 0 0 1-1.484 2.059z"
-            ></path>
-          </svg>
-          <svg xmlns="http://www.w3.org/2000/svg" id="sun-svg"
-            ><path
-              d="M6.993 12c0 2.761 2.246 5.007 5.007 5.007s5.007-2.246 5.007-5.007S14.761 6.993 12 6.993 6.993 9.239 6.993 12zM12 8.993c1.658 0 3.007 1.349 3.007 3.007S13.658 15.007 12 15.007 8.993 13.658 8.993 12 10.342 8.993 12 8.993zM10.998 19h2v3h-2zm0-17h2v3h-2zm-9 9h3v2h-3zm17 0h3v2h-3zM4.219 18.363l2.12-2.122 1.415 1.414-2.12 2.122zM16.24 6.344l2.122-2.122 1.414 1.414-2.122 2.122zM6.342 7.759 4.22 5.637l1.415-1.414 2.12 2.122zm13.434 10.605-1.414 1.414-2.122-2.122 1.414-1.414z"
-            ></path>
-          </svg>
-        </button>
+        {
+          SITE.lightAndDarkMode && (
+            <button
+              id="theme-btn"
+              class="focus-outline"
+              aria-label="switch theme"
+            >
+              <svg xmlns="http://www.w3.org/2000/svg" id="moon-svg">
+                <path d="M20.742 13.045a8.088 8.088 0 0 1-2.077.271c-2.135 0-4.14-.83-5.646-2.336a8.025 8.025 0 0 1-2.064-7.723A1 1 0 0 0 9.73 2.034a10.014 10.014 0 0 0-4.489 2.582c-3.898 3.898-3.898 10.243 0 14.143a9.937 9.937 0 0 0 7.072 2.93 9.93 9.93 0 0 0 7.07-2.929 10.007 10.007 0 0 0 2.583-4.491 1.001 1.001 0 0 0-1.224-1.224zm-2.772 4.301a7.947 7.947 0 0 1-5.656 2.343 7.953 7.953 0 0 1-5.658-2.344c-3.118-3.119-3.118-8.195 0-11.314a7.923 7.923 0 0 1 2.06-1.483 10.027 10.027 0 0 0 2.89 7.848 9.972 9.972 0 0 0 7.848 2.891 8.036 8.036 0 0 1-1.484 2.059z" />
+              </svg>
+              <svg xmlns="http://www.w3.org/2000/svg" id="sun-svg">
+                <path d="M6.993 12c0 2.761 2.246 5.007 5.007 5.007s5.007-2.246 5.007-5.007S14.761 6.993 12 6.993 6.993 9.239 6.993 12zM12 8.993c1.658 0 3.007 1.349 3.007 3.007S13.658 15.007 12 15.007 8.993 13.658 8.993 12 10.342 8.993 12 8.993zM10.998 19h2v3h-2zm0-17h2v3h-2zm-9 9h3v2h-3zm17 0h3v2h-3zM4.219 18.363l2.12-2.122 1.415 1.414-2.12 2.122zM16.24 6.344l2.122-2.122 1.414 1.414-2.122 2.122zM6.342 7.759 4.22 5.637l1.415-1.414 2.12 2.122zm13.434 10.605-1.414 1.414-2.122-2.122 1.414-1.414z" />
+              </svg>
+            </button>
+          )
+        }
       </div>
     </nav>
   </div>
diff --git a/src/config.ts b/src/config.ts
index ab5a4ff..65eb48d 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -6,6 +6,7 @@ export const SITE = {
   desc: "A minimal, responsive and SEO-friendly Astro blog theme.",
   title: "AstroPaper",
   ogImage: "og-default.png",
+  lightAndDarkMode: true,
   postPerPage: 3,
 };