Edward Tufte is definitely a recognized design guru but ever since I found out about him I have been _very_ puzzled about the design of his website. I would expect a design guru to have a better website.
Here's all the CSS for that site:
.fullwidthtable {}
.forum {color: #CC0000; font-size: 11px; font-family: Arial, Helvetica, sans-serif; line-height: 15px;}
.text { font-size: 15px; color: #000000;font-family: Arial, Helvetica, sans-serif; line-height: 21px;}
.textsm { font-size: 14px; color: #000000;font-family: Arial, Helvetica, sans-serif; line-height: 21px;}
.textxsm { font-size: 13px; color: #000000;font-family: Arial, Helvetica, sans-serif; line-height: 21px;}
.link { text-decoration: none; color=#CC0000}
.link:hover { text-decoration: underline; color: #CC0000}
.belink { text-decoration: none; color=#000000}
.belink:hover { text-decoration: underline; color: #CC0000}
.taglink { margin-top: 4pt; }