HTML list tags are far more restrictive than straight CSS. However, if either of the following is true, you should be able to successfully convert list formats to HTML list styles:
In most cases browsers will reformat the list styles unaided, and they will come out as you expect. However, see §30.11.3 Indenting list items for ways you might have to modify CSS properties to line up indents.
Note: Unless you specify XHTML as the output type, DITA2Go does not generate </li> closing tags, because browsers tend to space poorly when </li> is present.
§30.11.2.1 Specifying HTML list styles (deprecated)
§30.11.2.2 Converting lists with multiple paragraph formats
§30.11.2.3 Converting nested lists
§30.11.2.4 Converting dictionary lists