migrated to ASP.Net Core

Webfront/bower_components/bootstrap/docs/4.0/utilities/close-icon.md

@@ -0,0 +1,15 @@
+---
+layout: docs
+title: Close icon
+description: Use a generic close icon for dismissing content like modals and alerts.
+group: utilities
+toc: true
+---
+
+**Be sure to include text for screen readers**, as we've done with `aria-label`.
+
+{% example html %}
+<button type="button" class="close" aria-label="Close">
+  <span aria-hidden="true">&times;</span>
+</button>
+{% endexample %}