Blog sidebar sometimes move at the bottom of the site below posts due to extra-large image, large link, etc. To overcome this problem revert the changes you have done in your posts and if you are unable to recognize that problem then i have a solution.
- Open your blog’s homepage where all posts are shown.
- Hold-Down ctrl key and click on the posts heading one by one.
- If you are seeing sidebar under any post it means that post have some problem.
- Then find-out and solve that problem.