У вашего броузера проблема в совместимости с HTML5
This is a showcase of a kylo ren boss command that I made. Just click the link, copy and paste the command in a command block, and power the command block.
======================================================
Command:
http://pastebin.com/02qJ9KCV
======================================================
Music:
https://www.youtube.com/watch?v=OrEJ1MxHr40
https://www.youtube.com/watch?v=8um2hzZWQXs
======================================================