Creating Hover Effects with CSS3 Animations – hover.css
hover.css is a collection of hover effects with the power of CSS3 that can be used to create animated mouse hover over effects on any Html elements like buttons, images, and more.
JavaScript & CSS SASS
Clean and Animated Tooltips with Pure CSS – Simptip
Simptip is a tooltip resolution built top of SASS to create clean and animated tootips with CSS3 transitions and transforms.