By default, for HTML output DITA2Go writes CSS selectors as class names prefixed with the element tag.
To have DITA2Go write CSS selectors as just class names with no tag prefix:
[CSS] SelectorIncludesTag = Yes (default for HTML output) or No ; (omit element tag prefix, default for DITA and DocBook output) SelectorIncludesTag = No
When SelectorIncludesTag=Yes, CSS selectors consist of the element tag name followed by a period followed by the class name; for example, h1.heading1. This is the default for HTML and XHTML output.
When SelectorIncludesTag=No, CSS selectors do not have an element tag as a prefix; for example, heading1. This is the default for DITA and DocBook output.