diff --git a/docs/src/css/custom.css b/docs/src/css/custom.css
index 4593f4f94..deab47c88 100644
--- a/docs/src/css/custom.css
+++ b/docs/src/css/custom.css
@@ -33,16 +33,24 @@
 
 /* Dark mode styles based on Docusaurus dark theme */
 [data-theme='dark'] .head_Menu div {
+  font-weight: bold;
   background-color: var(--ifm-background-color);
   color: var(--ifm-font-color-base);
+  margin-left: 0.7rem;
+  font-size: larger;
 }
 
 [data-theme='dark'] .head_Menu li {
+  font-weight: normal;
   background-color: var(--ifm-background-color);
+  margin-bottom: 5px;
   color: var(--ifm-font-color-base);
 }
 
 [data-theme='dark'] .head_SubMenu div {
+  font-weight: normal;
   background-color: var(--ifm-background-color);
   color: var(--ifm-font-color-base);
+  margin-left: 0rem;
+  font-size: medium;
 }