How to create unlimited sidebar?

Hello,

1, Create new widget: http://prntscr.com/geb7hs 

1a, Click edit widget; http://prntscr.com/geb8d2

1b, Add html code to style for widget: http://prntscr.com/geb8lc

2, Add in your post, page, service, etc... 

2a, Front-End: http://prntscr.com/geb7wr

2b, Backend: http://prntscr.com/geb88d

Thank you