Trouble with Compliers

Unity Engine
1

I keep getting two complier errors I can’t figure out how to fix.
"expecting EOF, found ‘<’ " (line one of html)
"expecting ‘p’ found ‘e’ " (line 8 of html)
this is the html section it applies to:

"Gamedev Canvas Workshop" { padding: 0; margin: 0;} canvas {background: #eee; display: block; margin: 0 auto; }

2

This is a Unity development forum - why are you asking questions about HTML?