css optimization

Author: Hiram

src/renderer/src/style/layout.less

@@ -380,8 +380,8 @@
 
 :root,
 :root[theme-mode="light"] {
-  --td-bg-aside: #f6f6f6;
-  --td-bg-color-container: #fafafa;
+  --td-bg-aside: #f2f3f5;
+  --td-bg-color-container: #fbfbfb;
   --td-bg-color-page: #fff;
   --td-bg-content-active: #dfdfdf;
   --td-bg-content-hover: #e6e6e6;