@font-face {
  font-family: 'Source Sans Pro';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url(https://waps.l3s.uni-hannover.de/live/oe_/https://fonts.gstatic.com/s/sourcesanspro/v22/6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zAkA.ttf) format('truetype');
}