ENVY 4500 e does not print bottom line

When I print a large text off of a website on my ENVY 4500 e all-in-one printer, the last line of text on each sheet does not print.  When I print some pdf files the top and bottom lines are partially cut when the margins are small.  I am using a MacBook Pro computer.  How do I fix it so it prints everything?  Thank you.