refs #18833 [finc] remove visible back button (in normal sidebar), show only...

refs #18833 [finc] remove visible back button (in normal sidebar), show only in offcanvas sidebar mode

* remove content top padding just for mobile resolutions

themes/finc/scss/compiled.scss

@@ -1805,7 +1805,7 @@ footer {
 .sidebar {
   padding-top: $content-top-padding;
 
-  @media only screen and (max-width: $screen-sm-max) {
+  @media only screen and (max-width: $screen-sm-min) {
     padding-top: 0;
   }
 }
@@ -1901,8 +1901,7 @@ footer {
 }
 
 //// Off-Canvas
-@media only screen and (max-width: $screen-sm-max) {
-  // FIXME: please REVIEW this shows "zurueck" Button on SM devices when the sidebar is shown
+@media only screen and (max-width: $screen-sm-min) {
   .close-offcanvas {
     display: block;
   }