@font-face {
  font-family: Avenir-Roman;
  src: url(https://chat.sleekflow.io/static/fonts/Avenir-Roman.ttf);
  font-weight: normal;
}
@font-face {
  font-family: Avenir;
  src: url(https://chat.sleekflow.io/static/fonts/Avenir-Book.ttf);
  font-weight: normal;
}
@font-face {
  font-family: Avenir;
  src: url(https://chat.sleekflow.io/static/fonts/Avenir-Medium.ttf);
  font-weight: 500;
}
@font-face {
  font-family: Avenir;
  src: url(https://chat.sleekflow.io/static/fonts/Avenir-Heavy.ttf);
  font-weight: 900;
}