On left side I have set border to -2 that is why on left side there is no gap but on right side I have also set border to -2 but this number not working as you can see big gap in right side.
Check the screen shoot. https://prnt.sc/OAH62sTK4Gbk
Also,
I want to remove TAB BORDER and keep only CONTENT BORDER
Check the screen shoot. https://prnt.sc/_YPK7pisi05g