diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7be1a4d..e625932 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 #### More aligned with GitHub style
 
+- Fine-tune the style of the navigation bar.
+
 ##### Template File
 
 ### 🐞 Fix
diff --git a/src/core/github.ts b/src/core/github.ts
index 81cdfb1..d8db07c 100644
--- a/src/core/github.ts
+++ b/src/core/github.ts
@@ -202,7 +202,7 @@ export function github2ThemeColor(githubColor: GithubColor): ThemeColor {
       bg: githubColor.bgColor.emphasis,
     },
     nav: {
-      bg: githubColor.bgColor.muted,
+      bg: githubColor.bgColor.inset,
       hoverBg: githubColor.control.transparent.bgColor.hover,
       text: themeVars.color.text.self,
     },
diff --git a/styles/components/navbar.ts b/styles/components/navbar.ts
index 6458d3a..9835d90 100644
--- a/styles/components/navbar.ts
+++ b/styles/components/navbar.ts
@@ -3,7 +3,6 @@ import { css, customThemeVars, otherThemeVars, themeVars } from "src/types/vars"
 
 export const navbarRight = css`
   #navbar {
-    border-bottom: 0;
     padding: 8px 16px; // 上下内边距 + .navbar-left & .navbar-right 的 min-height = 64px
     min-height: 64px;
     .navbar-left,