Can you post a link to your site please?
http://writedge.com/
sidebar doesn’t show on front page which is fine, just individual posts.
Go into Appearance -> Customise -> Other Settings (on the left at the bottom) and paste this into your Custom CSS.
.single.has-sidebar .content-area {
float: right;
margin-right: -34%;
width: 100%;
}
.single.has-sidebar .widget-area.sidebar {
float: left;
margin-right: -23rem;
width: 22rem;
}
Navigate to a post within the customise area, and make sure it’s in the correct position for you, then save your edited CSS.
Without custom styles: Screenshot 1
With custom styles: Screenshot 2