@@ -1 +1,7 @@
## Block toolbar demo
+
+1. Check if button appears next to all block elements except image (default) and heading1 (custom).
+2. Change format of one of the block elements, panel attached to button should hide after that.
+3. Put selection in the one of the last blocks, click on button to display panel then start resize browser window
+and observe if button and panel are properly repositioned.