fix(theme): header blur incomplete

src/client/theme-default/components/VPNav.vue

@@ -28,6 +28,7 @@ provide('close-screen', closeScreen)
 @media (min-width: 960px) {
   .VPNav {
     position: fixed;
+    backdrop-filter: saturate(50%) blur(8px);
   }
 }
 </style>

src/client/theme-default/components/VPNavBar.vue

@@ -76,12 +76,6 @@ defineEmits<{
   flex-grow: 1;
 }
 
-@media (min-width: 960px) {
-  .content {
-    backdrop-filter: saturate(50%) blur(8px);
-  }
-}
-
 .menu + .translations::before,
 .menu + .appearance::before,
 .menu + .social-links::before,