Sidebar problems

Hi,

I have problems loading the sidebar the way it should, when you go to single listing, the sidebar is loading after the listings .

I have tried this but not working

.single-listing {float: left; width: 71%}
.single-listing #content {width: auto;}

Here is the link so you can see
http://unitednews.sr/listings/te-koop-een-woonhuis-en-vakantiewoning/

https://wordpress.org/plugins/wp-listings/