Points are absolute, ems are relative. [1]<p>[1] <a href="http:&#x2F;&#x2F;www.w3schools.com&#x2F;cssref&#x2F;css_units.asp" rel="nofollow">http:&#x2F;&#x2F;www.w3schools.com&#x2F;cssref&#x2F;css_units.asp</a>