You need to override this style rule in style.css:
.singular #content, .left-sidebar.singular #content {
margin: 0 7.6%;
position: relative;
width: auto;
}
You need:
.singular #content, .left-sidebar.singular #content {
margin: 0 7.6% 0 34%;
width: 58.4%;
}
This will give your single page content the same position and dimensions as your posts page content.
You should, of course, create a child theme and make the changes there.
Cheers
PAE
Worked like a charm!!!
And thanks a lot for the tip with the child theme 🙂