Fix dropup in bottom navbar for all the breakpoints

scss/_navbar.scss

@@ -74,13 +74,6 @@
     position: static;
     float: none;
   }
-
-  .dropdown-toggle {
-    &::after {
-      border-top: $caret-width solid;
-      border-bottom: 0;
-    }
-  }
 }
 
 
@@ -151,18 +144,6 @@
           padding-right: 0;
           padding-left: 0;
         }
-
-        .dropup {
-          .dropdown-menu {
-            position: absolute;
-            top: auto;
-            bottom: 100%;
-          }
-
-          .dropdown-toggle {
-            @include caret(up);
-          }
-        }
       }
 
       @include media-breakpoint-up($next) {
@@ -203,6 +184,13 @@
         .navbar-toggler {
           display: none;
         }
+
+        .dropup {
+          .dropdown-menu {
+            top: auto;
+            bottom: 100%;
+          }
+        }
       }
     }
   }