Controlling bookmark display position

Is there a way to change the bookmark settings so that instead of displaying the content at top of the page, the content would display at a specified distance from the top? I have a master page with a permanent display of links to to other topics. The problem is that when I use mini-tocs or bookmarks in the topics using that master, RH will display the content at the top of main content section, where it is obscured by my permanent links display, and requires the user to scroll down a bit to see the first couple of lines of content. Any help to solve this problem will be greatly appreciated. I'm using RoboHelp 2015, HTML5 output.