update bootstrap to version 4.3.1

1 files changed, 15 insertions, 0 deletions

diff --git a/vendor/twbs/bootstrap/site/docs/4.3/utilities/close-icon.md b/vendor/twbs/bootstrap/site/docs/4.3/utilities/close-icon.md
new file mode 100644
index 000000000..3a8cb3c44
--- /dev/null
+++ b/vendor/twbs/bootstrap/site/docs/4.3/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
+---
+
+**Be sure to include text for screen readers**, as we've done with `aria-label`.
+
+{% capture example %}
+<button type="button" class="close" aria-label="Close">
+  <span aria-hidden="true">&times;</span>
+</button>
+{% endcapture %}
+{% include example.html content=example %}