Custom.css

pre,
tt,
code,
kbd,
xmp,
plaintext,
listing,
.file_code,
.file_diff {
  font-family: 'Anonymous Pro' !important;
  -moz-tab-size: 2;
  -o-tab-size: 2;
  -webkit-tab-size: 2;
  tab-size: 2;
}