Table of Contents Customization

The appearance of the selected item in the Table of Contents can be enhanced. To highlight the background of the selected item, go to the output folder of the WebHelp transformation and locate the toc.css files in the oxygen-webhelp > resources > skins > desktop and oxygen-webhelp > resources > skins > desktop-frames folders. Open them, find the menuItemSelected class, and change the value of the background property.
Note: Also, you can overwrite the same value from your own CSS.