diff --git a/docs/stylesheets/extra.css b/docs/stylesheets/extra.css
index c1d6fa10b0e5c37e9ff1e6bebb343c83a3c5966a..e2f0abe73b6fc7149c7bccf29cb44f8f2c957763 100644
--- a/docs/stylesheets/extra.css
+++ b/docs/stylesheets/extra.css
@@ -30,6 +30,12 @@
     --md-typeset-mark-color: #ffdc4e85;
     --md-admonition-fg-color: #ffdd4e;
     --md-typeset-a-color: #ffdd4e;
+   
+    /* Fixes mermaid diagrams in dark mode*/
+    --md-mermaid-sequence-message-fg-color: white !important;
+    --md-mermaid-label-bg-color: #ffdd4e;
+    --md-mermaid-edge-color: white;
+    --md-mermaid-sequence-actor-line-color: white;
 }
 
 :root > * [data-md-color-scheme="slate"] {
diff --git a/overrides/partials/header.html b/overrides/partials/header.html
index 52fa36834d9f952aceea876a305657ee89993bb2..c5514d005a22b543e0971d3478d34d0ea4bca508 100644
--- a/overrides/partials/header.html
+++ b/overrides/partials/header.html
@@ -43,8 +43,7 @@
           <option value="/1-0/">Version 1.0</option>
         </select>
       </div>
-        --> remove this line
-
+      -->
       {% if config.theme.palette %}
         {% if not config.theme.palette is mapping %}
           {% include "partials/palette.html" %}