I added 100% in template width under Layout tab in template and it broke the complete outlet on front end. Is there anyway to just shift the sidebar position toward right end?
you can change the max-width of .gkPage to let say 1400px. Then you also need to change the article header>time left to -100px to get the date fixed to that change.
You must take to consider that not all users has same screen size as you... So if someone has for example 1920px wide screen spacing will be bigger, while when on smaller screen template will fill full width.
This is why usually templates has some max-width set so they do not fill entire browser screen but beyond this max-width size - content nicely stays within selected column width.