reference

User interface:

• https://www.w3schools.com/css/tryit.asp?filename=trycss_navbar_horizontal_black

Rules of Texas Hold'em

• https://www.youtube.com/watch?v=cnm_V7A-G6c
• https://vegasclick.com/games/texasholdem

Django Channels

• https://channels.readthedocs.io/en/stable/inshort.html
• https://www.sourcelair.com/blog/articles/115/django-channels-chat