C.9. Transitions

CSS3 adds transition support, letting you create simple animations when a style changes. You need to pass a duration, property, and optional animation type to the transition property. You can specify the duration in seconds (s) or milliseconds (ms):

/* duration, property, animation type (optional) */
transition: 1.5s opacity ease-out

/* Multiple transitions */
transition: 2s opacity , .5s height ease-in
transition: .5s height , .5s .5s width