Nothing special, really, just updated the blogger template for the sake of trying something new. And, yea, I lost my previous template backup somehow, so there was no way back. Now I have found my backup, but I don't like it anymore, so I am going to stay with this template for a while. Who cares.
Quick help to those who have tried to find some help and failed (as I have so I have to write the code myself). Assuming that you have your virgin child theme configured and activated: here is a function which goes into the functions.php file (of your configured and activated child theme): function childtheme_twentyseventeen_fonts_url() { $replace_original_font = true; // unless you really like Libre Franklin if ($replace_original_font !== true) { $hyph = '-custom-'; } else { $hyph = '-'; }; $font_families = array( //add your Google fonts and weights (400 and 700 are defaults for normal and bold) here: 'Oswald:200,400,700', 'Lato:200,400,700', ); $query_args = array( 'family' => urlencode( implode( '|', $font_families ) ), 'subset' => urlencode( 'latin,latin-ext' ), ); $fonts_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' ); wp_enqueue_style( 'twentyseventeen' ....