@font-face {
   font-family: 'SourceSerif4-Light';
   font-display: swap;
   src: url('SourceSerif4-Light/font.ttf');
}
@font-face {
   font-family: 'SourceSerif4-Regular';
   font-display: swap;
   src: url('SourceSerif4-Regular/font.ttf');
}