Add positive border utilities

diff --git a/docs/4.0/utilities/borders.md b/docs/4.0/utilities/borders.md
index fcc064d39e3bbc1e07a5ff35cc840be005345a21..fac49e3a1aadf96567d9f8400408846190bc074c 100644 (file)
--- a/docs/4.0/utilities/borders.md
+++ b/docs/4.0/utilities/borders.md
@@ -14,6 +14,10 @@ Add classes to an element to remove all borders or some borders.
 <div class="bd-example-border-utils">
 {% example html %}
 <span class="border"></span>
+<span class="border-top"></span>
+<span class="border-right"></span>
+<span class="border-bottom"></span>
+<span class="border-left"></span>
 <span class="border-0"></span>
 <span class="border-top-0"></span>
 <span class="border-right-0"></span>