You can customize the “Read More” wrapper tag using the Post Grid Combo plugin. This article will help you to customize the “read more” wrapper tag.
To begin, insert a “Read More” block.
Click on the “Wrapper” tab.
Here, you can change the wrapper tag to H1, H2, H3, H4, H5, H6, SPAN, DIV and P tags.
And you can customize the display setting by selecting any of the given options.