hugo-blog/static/css/custom.css

@import url('https://fonts.googleapis.com/css?family=Noto+Sans');
.post-full-content {
  font-family:  "Noto Sans" ,"Roboto" ,sans-serif;
  font-size: 1.25em;
}
post-card-excerpt {
  font-family:  "Noto Sans" ,"Roboto" ,sans-serif;
}