Black Lives Matter.

You can define animations using the keyframes helper from @emotion/react. keyframes takes in a css keyframe definition and returns an object you can use in styles. You can use strings or objects just like css.

/** @jsx jsx */
import { jsx, css, keyframes } from '@emotion/react'

const bounce = keyframes`
  from, 20%, 53%, 80%, to {
    transform: translate3d(0,0,0);
  }

  40%, 43% {
    transform: translate3d(0, -30px, 0);
  }

  70% {
    transform: translate3d(0, -15px, 0);
  }

  90% {
    transform: translate3d(0,-4px,0);
  }
`

render(
  <div
    css={css`
      animation: ${bounce} 1s ease infinite;
    `}
  >
    some bouncing text!
  </div>
)
some bouncing text!