move flex to navbar container only; otherwise it affects things negatively elsewhere

scss/_navbar.scss

@@ -9,13 +9,13 @@
 
   @include media-breakpoint-up(sm) {
     display: flex;
-    // flex: 0 0 auto;
     flex-wrap: nowrap;
     align-items: center;
   }
 
   // For nesting containers, have to redeclare for alignment purposes
   > .container {
+    display: flex;
     flex-wrap: nowrap;
     align-items: center;
   }

scss/mixins/_grid.scss

@@ -3,7 +3,6 @@
 // Generate semantic grid columns with these mixins.
 
 @mixin make-container($gutters: $grid-gutter-widths) {
-  display: flex;
   margin-left: auto;
   margin-right: auto;