Alves: update config-child-theme

alves/sass/_config-child-theme.scss

@@ -6,8 +6,8 @@
 // @import url('https://fonts.googleapis.com/css?family=Playfair+Display:400,400i|Roboto:400,400i,700&display=swap');
 
 $config-global: map-deep-set($config-global, "font" "size" "root", "20px");
-$config-global: map-deep-set($config-global, "font" "family" "primary", "\'Playfair Display\', serif");
-$config-global: map-deep-set($config-global, "font" "family" "secondary", "\'Roboto\', sans-serif");
+$config-global: map-deep-set($config-global, "font" "family" "primary", "fallback", "\'Playfair Display\', serif");
+$config-global: map-deep-set($config-global, "font" "family" "secondary", "fallback", "\'Roboto\', sans-serif");
 $config-global: map-deep-set($config-global, "color" "primary" "default", pink);
 $config-global: map-deep-set($config-global, "font" "size" "root", "20px");
 
@@ -15,12 +15,12 @@ $config-global: map-deep-set($config-global, "font" "size" "root", "20px");
 $config-button: map-deep-set($config-button, "color" "background", orange);
 
 // Headings
-$config-heading: map-deep-set($config-heading, "font" "family", "\'Playfair Display\', serif");
+$config-heading: map-deep-set($config-heading, "font" "family", "fallback", "\'Playfair Display\', serif");
 $config-heading: map-deep-set($config-heading, "font" "weight", 200);
 
 // Header
-$config-header: map-deep-set($config-header, "branding" "title" "font" "family", "\'Playfair Display\', serif");
+$config-header: map-deep-set($config-header, "branding" "title" "font" "family", "fallback", "\'Playfair Display\', serif");
 $config-header: map-deep-set($config-header, "branding" "title" "font" "weight", 200);
-$config-header: map-deep-set($config-header, "branding" "description" "font" "family", "\'Roboto\', sans-serif");
+$config-header: map-deep-set($config-header, "branding" "description" "font" "family", "fallback", "\'Roboto\', sans-serif");
 $config-header: map-deep-set($config-header, "branding" "color" "link", orange);
 $config-header: map-deep-set($config-header, "main-nav" "color" "link", orange);