first commit

assets/styles/backend/utilities/_border.scss

@@ -0,0 +1,7 @@
+@each $color, $value in $theme-colors {
+  @each $position in ['left', 'bottom'] {
+    .border-#{$position}-#{$color} {
+      border-#{$position}: .25rem solid $value !important;
+    }
+  }
+}