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Re:Show HN: hint.css – a tooltip library in CSS by taf2 on Monday February 04, 2013 @09:27AM (#5164191)
very cool, use of css3 attr function. allowing the rule:

content: attr(data-hint);

see: https://developer.mozilla.org/en-US/docs/CSS/attr

Re:Show HN: hint.css – a tooltip library in CSS by city41 on Monday February 04, 2013 @10:11AM (#5164455)
I didn't know that was possible. has got my mind reeling with what I can now do with CSS. Thanks OP for making this.
Re:Show HN: hint.css – a tooltip library in CSS by nej on Monday February 04, 2013 @08:11PM (#5168396)
Here's full range of what's possible with the CSS content Property in case you're interested: http://www.w3schools.com/cssref/pr_gen_content.asp