diff --git a/packages/gitbook/src/components/Header/Header.tsx b/packages/gitbook/src/components/Header/Header.tsx
index 8caf04ade..ddb2f3f94 100644
--- a/packages/gitbook/src/components/Header/Header.tsx
+++ b/packages/gitbook/src/components/Header/Header.tsx
@@ -46,8 +46,8 @@ export function Header(props: {
                 'z-30',
                 'w-full',
                 'flex-none',
-                'border-b',
-                'border-tint-subtle',
+                'shadow-[0px_1px_0px]',
+                'shadow-tint-12/2',
 
                 'bg-tint-base/9',
                 'theme-muted:bg-tint-subtle/9',