my website turned bank after adding code to enfold-functions.php!

Hi,

I was looking for a solution to add more google fonts to my website and found a solution through your forum.
I added the code below to enfold-functions.php and now I cannot enter my site anymore as it is completely blank!

Please help me asap!

Thanks in advance,
Naima

add_filter( ‘avf_google_heading_font’, ‘avia_add_heading_font’);
function avia_add_heading_font($fonts)
{
$fonts[‘Oswald’] = ‘Oswald:300,400,700′;
return $fonts;
}

add_filter( ‘avf_google_content_font’, ‘avia_add_content_font’);
function avia_add_content_font($fonts)
{
$fonts[‘Oswald’] = ‘Oswald:300,400,700’;
return $fonts;
}