diff --git a/docs/.vitepress/theme/custom.css b/docs/.vitepress/theme/custom.css
index 8d5b71f56..24d1fa7dd 100644
--- a/docs/.vitepress/theme/custom.css
+++ b/docs/.vitepress/theme/custom.css
@@ -15,3 +15,7 @@
   --vp-home-hero-image-background-image: linear-gradient(-45deg, #bd34fe 50%, #ff3670 50%);
   --vp-home-hero-image-filter: blur(72px);
 }
+
+.vp-doc > div {
+  width: 100%;
+}
diff --git a/packages/mermaid/src/docs/.vitepress/theme/custom.css b/packages/mermaid/src/docs/.vitepress/theme/custom.css
index 8d5b71f56..24d1fa7dd 100644
--- a/packages/mermaid/src/docs/.vitepress/theme/custom.css
+++ b/packages/mermaid/src/docs/.vitepress/theme/custom.css
@@ -15,3 +15,7 @@
   --vp-home-hero-image-background-image: linear-gradient(-45deg, #bd34fe 50%, #ff3670 50%);
   --vp-home-hero-image-filter: blur(72px);
 }
+
+.vp-doc > div {
+  width: 100%;
+}