@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-stretch: normal;
  font-display: swap;
  src: url(fonts/f0.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-stretch: normal;
  font-display: swap;
  src: url(fonts/f1.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-stretch: normal;
  font-display: swap;
  src: url(fonts/f2.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Serif';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(fonts/f3.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Serif';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(fonts/f4.ttf) format('truetype');
}