This plugin takes care of wrapping your intro text (everything before <!–more–> — also called “teaser content”) in a div element with the class “intro”.
This allows for easy styling of the intro text, e.g. with larger fonts, colors, etc.
- I installed the plugin, but can’t see any difference
The difference is only in the outputted HTML. You must add styling of the intro class yourself.
- Where do I add the styling?
- The styling i added was lost when I upgraded my theme
This has nothing to do with the plugin. You’re doing things the wrong way. Read this: https://codex.wordpress.org/Child_Themes
- Public release