Prevent scroll-bar from adding-up to the Width of page on Chrome

Prevent scroll-bar from adding-up to the Width of page on Chrome

I have a small issue trying to keep my .html pages at a consistent width
on Chrome, For example I have a page (1) with lots of contents that
overflows the viewport's (right word?) height, so there's a vertical
scroll-bar on that page (1). On page (2) i have the same layout (menus,
divs,...etc) but less content, so no vertical scroll-bars in there.
The problem is that on page (1) the scroll-bars seem to push elements
slightly to the left (adding-up to the width?) while everything appears
well centered on page (2)
I'm still a beginner on HTML/CSS/JS, and I'm fairly convinced that this
isn't so difficult, but i had no luck figuring out the solution. It does
work as intended on IE10, and FireFox (non-interfering scroll-bars), I
only encountered this on Chrome.
Thanks for the assistance !