Update _nav-sidebar.scss

src/scss/_nav-sidebar.scss

@@ -5,16 +5,16 @@
     > .nav-link {
       margin-bottom: .2rem;
 
-      .end {
+      .nav-arrow {
         @include transition(transform $lte-transition-fn $lte-transition-speed);
-        transform: none #{"/*rtl:rotate(-180deg)*/"};
+        transform: none #{"/*rtl:rotate(180deg)*/"};
       }
     }
   }
 
   // All levels
-  .nav-link > .end,
-  .nav-link > p > .end {
+  .nav-link > .nav-arrow,
+  .nav-link > p > .nav-arrow {
     position: absolute;
     top: .7rem;
     right: 1rem;
@@ -57,8 +57,7 @@
   .menu-open,
   .menu-is-opening {
     > .nav-link {
-      svg.end,
-      i.end {
+      .nav-arrow {
         transform: rotate(90deg) #{"/*rtl:rotate(90deg)*/"};
       }
     }