I do see the same problem. The preview area stays blank for about 10 seconds, and then display what looks like less code:
.\n@body-bg: #fff;\n\/\/** Global text color on
Sauvegarder
Nouveau/nouvelle
Désactivé
.\n@text-color: @gray-dark;\n\n\/\/** Global textual link color.\n@link-color: @brand-primary;\n\/\/** Link hover color set via
darken()function.\n@link-hover-color: darken(@link-color, 15%);\n\/\/** Link hover decoration.\n@link-hover-decoration: underline;\n\n\n\/\/== Typography\n\/\/\n\/\/## Font, line-height, and color for body text, headings, and more.\n\n@font-family-sans-serif: \"Helvetica Neue\", Helvetica, Arial, sans-serif;\n@font-family-serif: Georgia, \"Times New Roman\", Times, serif;\n\/\/** Default monospace fonts for
,
, and
This is both on Purity 3 and on t3 bs3 blank.