Maximum width for VBCS pages even after reducing browser width

Summary:

Hi,

I am using Redwood based template vbcs application. Inside this in shell page I am using oj-sp-in-app-navigation component to show different flows at the bottom. In each flow I am loading separate vbcs application inside an iframe.

I want these vbcs apps to occupy maximum width even when I reduce my browsed width to 80% or less. As of now, the moment I reduce the browser width below 90%, I see a lot of spaces on the left and right side of the screen. It also introduces a horizontal scroll bar.

How can I achieve this maximum space even if browser width is reduced.