Uneasy css pentagon?

Question

css

Tell me how to make such a pentagon in css (there will be my text inside, so the jpg insert is not suitable).

Answer 1

http://codepen.io/werty1001/pen/NAwEOq

Answer 2

https://jsfiddle.net/qvzjw9ra/
True, this is terribly unreliable and crooked :)
PS: the answer above is more reliable
PS: I didn’t check it, but my example just didn’t survive :-( I apologize for clogging the air