I am getting two errors in w3 css validtor as
Value Error : font-family Property font-family doesn't exist in CSS level 2.1 but exists in [css1, css2, css3] : Helvetica
Property src doesn't exist : url('tl_files/Helvetica.ttf') format("truetype" )
my css with these code is\
@font-face{font-family:Helvetica;src: url('tl_files/Helvetica.ttf') format("truetype");}
how can I rectify these errors?
Strange-looking error, but just switch your validation profile to CSS level 3 and that will sort it. You can find this in a drop-down menu on the page where you entered your code to validate.