diff --git a/source/_templates/theme-switcher.html b/source/_templates/theme-switcher.html
deleted file mode 100644
index 71055b6281..0000000000
--- a/source/_templates/theme-switcher.html
+++ /dev/null
@@ -1,95 +0,0 @@
-<div class="theme-switch-wrapper">
-    <label class="theme-switch" for="checkbox">
-        <input type="checkbox" id="checkbox" />
-        <div class="slider round"></div>
-  </label>
-  <em>Enable Dark Mode!</em>
-</div>
-
-<style>
-/*Simple css to style it like a toggle switch*/
-.theme-switch-wrapper {
-  display: flex;
-  align-items: center;
-
-  em {
-    margin-left: 10px;
-    font-size: 1rem;
-  }
-}
-.theme-switch {
-  display: inline-block;
-  height: 34px;
-  position: relative;
-  width: 60px;
-}
-
-.theme-switch input {
-  display:none;
-}
-
-.slider {
-  background-color: #ccc;
-  bottom: 0;
-  cursor: pointer;
-  left: 0;
-  position: absolute;
-  right: 0;
-  top: 0;
-  transition: .4s;
-}
-
-.slider:before {
-  background-color: #fff;
-  bottom: 4px;
-  content: "";
-  height: 26px;
-  left: 4px;
-  position: absolute;
-  transition: .4s;
-  width: 26px;
-}
-
-input:checked + .slider {
-  background-color: #66bb6a;
-}
-
-input:checked + .slider:before {
-  transform: translateX(26px);
-}
-
-.slider.round {
-  border-radius: 34px;
-}
-
-.slider.round:before {
-  border-radius: 50%;
-}
-</style>
-
-<script>
-  const toggleSwitch = document.querySelector('.theme-switch input[type="checkbox"]');
-
-  function switchTheme(e) {
-    if (e.target.checked) {
-        document.documentElement.setAttribute('data-theme', 'dark');
-        localStorage.setItem('theme', 'dark'); //add this
-    }
-    else {
-        document.documentElement.setAttribute('data-theme', 'light');
-        localStorage.setItem('theme', 'light'); //add this
-    }
-  }
-
-  toggleSwitch.addEventListener('change', switchTheme, false);
-
-  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-
-  if (currentTheme) {
-    document.documentElement.setAttribute('data-theme', currentTheme);
-
-    if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-    }
-  }
-</script>
diff --git a/source/mainnet/conf.py b/source/mainnet/conf.py
index 5ae76f4206..a50f4bad0d 100644
--- a/source/mainnet/conf.py
+++ b/source/mainnet/conf.py
@@ -256,6 +256,7 @@
     "github_version": "main",
     "doc_path": "source/mainnet",
     "conf_py_path": "/source/",
+    "default_mode": "light",
 }
 
 # Add any paths that contain custom static files (such as style sheets) here,