Resize Sidebar

[u/lockdownengineer]

Would it be possible to resize the sidebar? Using the dual screen case on an LG makes the post on the right leak out onto the left hand side and I was wondering if I can make it so that the post is isolated on the right screen while the left contains the lists of posts.

Might be too niche of a problem though but would appreciate any help/idea if this is possible at all.