A set of effects for modals created with CSS. They animate thanks to CSS transforms and animations that are supported by several modern browsers, and some effects use SVG animations of morphing paths with the help of Snap.svg. The resource is free and it comes with an article explaining the process.
Delightful and performance-focused pure css loading animations.
GLYPHICONS is a library of precisely prepared monochromatic icons and symbols, created with an emphasis on simplicity and easy orientation.