CSS hover effect for word cloud
For example, on mouseover mark the element (cardset name) with <mark>cardset name</mark>
.
hover: callback to call when the cursor enters or leaves a region occupied by a word. The callback will take arguments callback(item, dimension, event), where event is the original mousemove event.
https://github.com/timdream/wordcloud2.js/blob/gh-pages/API.md