Is your CSS overriding it?
CSS does not override these 5 html files. Changes must be made in these files.
To change margins? I’ve always just edited the applied CSS – never mucked around with those files in the output
In CSS you only format the margins in topic files.
I want to change margins in the left columns with TOC, INDEX and GLOSSARY and GLOSSARY DEFINITIONS.That is what these 5 file are for.
I also tried to copy these 5 files from the RH11 version to the RH2015 version but that does not work. In RH2015 these files are rather different from the RH11.