update doc and examples

1 files changed, 4 insertions, 0 deletions

diff --git a/src/buttons.less b/src/buttons.less
index 29c8e18..39618ff 100644
--- a/src/buttons.less
+++ b/src/buttons.less
@@ -189,6 +189,10 @@
       border-bottom-left-radius: 0;
       z-index: 99;
     }
+    &:hover,
+    &:focus {
+      z-index: 99;
+    }
   }
 
   &.btn-group-block {