deleting header text above image in “primepress” theme

Hi all,

My menu tabs are partially covering up my header text (which is just the domain name) on the site I’m rebuilding https://essentialwellbeing.com.au/wordpress/
I’m thinking the easiest way is jut to get rid of the domain mane text but I cant see where to do it in header.php and when I try and delete this part

homelink{font-size:35px; line-height:1; font-weight:bold; letter-spacing:-0.5px; padding:40px 20px 10px 20px; font-variant:small-caps;}
.homelink a{color:#444;}
.homelink a:hover{color:#000; text-decoration:none;}

from the style sheet I get a 500 error when I try and save it… sugestions?