CSS (copied one button from the first link and just the colors code from the second)

https://fdossena.com/?p=html5cool/buttons/i.frag

https://preview.themeforest.net/item/squadforce-esports-gaming-wordpress-theme/full_screen_preview/25000542?clickid=2s9yMPykJxyORf3wUx0Mo3EUUki3xXR9F2X63E0&iradid=275988&iradtype=ONLINE_TRACKING_LINK&irgwc=1&irmptype=mediapartner&irpid=369282&mp_value1=&utm_campaign=af_impact_radius_369282&utm_medium=affiliate&utm_source=impact_radius

SOCKET DOC (to see how to configure a socket on angular)

https://socket.io/docs/emit-cheatsheet/

https://www.npmjs.com/package/ngx-socket-io

the design and the algorith is mine and not inspired from anywhere.