            font-weight: 300;
            text-rendering: optimizelegibility;
          }
-         h1, h2, h3, h4, h5 {
+         h1, h2, h3, h4, h5, #preamble {
            font-family: jaf-bernino-sans, 'Lucida Grande',
                'Lucida Sans Unicode', 'Lucida Sans', Geneva,
                Verdana, sans-serif;

                 :ensure org-beautify-theme))

;; Tweaking org HTML export.
(setq org-html-preamble nil)
(setq org-html-postamble nil)

;; From http://emacsredux.com/blog/2015/01/18/clear-comint-buffers/

      "<style type='text/css'>
         body {
           padding: 25px;
           margin: 0 auto;
           font-size: 100%;
           width: 50%;
         }
         .figure {
           padding: 0;
