Hi,
I personally opened 2 topics in this thread and there were 3 others, all were removed one hour ago ... what happened please ? Should I post new topic ?
The basic read more at the Joomla article has no style and cant be styled, because they have no extra class. But you can create an override for the read more link
Let's say you want to customize the layout of the content Joomla component. To do so, just copy the com_content directory from /warp/systems/joomla.1.x/layouts to the theme /layouts directory.
Further this way you won't lose any of your changes after an update of your theme. Make sure to only copy the files you want to change, all other layout files will be loaded automatically from the system defaults.