In the update from May 8, 2019 we added functionality for removing left, right or both navigation panels.
Now if there is a right or left panel on a page, there is a corresponding class added in <body> tag, namely:
/*
Classes for BODY:
if the page has a “left panel”, add a class for BODY -- ".page-has-left-panels"
if the page has a “right panel”, add a class for BODY -- ".page-has-right-panels"
*/
Now the above mentioned classes are added on every page, where there is either left or right panel.
If you want to remove the left panel, you need to:
<div class="fixed-sidebar">...</div><div class="fixed-sidebar fixed-sidebar-responsive">...</div>
If you want to remove the right panel, you need to:
<div class="fixed-sidebar right">...</div><div class="fixed-sidebar right fixed-sidebar-responsive">...</div>