I’ve been posting on my website and I noticed that the right part of the site has a huge empty space that could be used perfectly for displaying images at high resolutions or a sidebar.
My question is how can I modify the space used by the body width post images to fit better?
And how I add a sidebar with wadgets, and how I add wadgets
The right gutter is used for the vertical timeline. You can adjust the width a bit using CSS if you like, but I strongly suggest using CSS media queries to control the sizing to ensure the browser has enough width.