System Font Stack

Quelle: https://woorkup.com/system-font/

function speedwp_system_font_stack() {
    echo '<style>body,h1,h2,h3,h4,h5,h6{font-family:-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol"}</style>';
    }
add_action('wp_head', 'speedwp_system_font_stack');