dynadocx accepts HTML tags and CSS styles for adding new contents in documents.
Besides compatible, standard tags and styles, dynadocx also supports many other custom contents and styles in order to get access to the MS Word functionalities that do not have a direct match with the tags, attributes or styles set in the standard HTML/CSS.
Not all HTML tags and CSS styles are compatible with dynadocx. The page Contents and Styles Reference details the supported tags, attributes, properties, styles and values.