making nested indentation more consistent
making nested indentation more consistent

reduced some of the left margin/padding used for indenting nested content.

addresses part 2 of issue #66

STIXProject/stix-to-html,empereor/cvrf-to-html,STIXProject/stix-to-html,empereor/cvrf-to-html,empereor/cvrf-to-html,STIXProject/stix-to-html,STIXProject/stix-to-html,empereor/cvrf-to-html