From the latest Codebeamer 7.3.0.1 it is also possible to embed the customized HTML/CSS templates inside the template. This means that you can have a different HTML/CSS look in each docx template, instead of having only one customization globally.

So instead of editing the "mhtml-decoration.vm" and "mhtml-export-css.vm" files now you can put the same customizations into the docx template. These customizations are stored in blue boxes with title "Custom HTML" and "Custom CSS" title appearing when you click on them. The customized content can be a Velocity template. If you want to only extend - and not replace- the default template then keep the ${defaultTemplate} variable/placeholder, which will be replaced by the original content from the "mhtml-decoration.vm" or "mhtml-export-css.vm"

Following screenshot shows how to perform the same customization of the HTML tables inside the template: