A quick solution for tooltips? Here we go with Hint.css!
Hint.css is a tooltip library written in SASS which uses only HTML/CSS to create simple tooltips.
Any element on your page which needs to have a tooltip has to be given at least one of the position classes: hint–top, hint–bottom, hint–left, hint–right to position the tooltip.
<link rel="stylesheet" href="hint.css">
Hello, <span class="hint--bottom">please hover over me.</span>