{
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background-color: #111;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}
.waviy {
  position: relative;
}
.waviy span {
  position: relative;
  display: inline-block;
  font-size: 100px;
  color: #fff;
  text-transform: lowercase;
  animation: flip 3s infinite;
  animation-delay: calc(.2s * var(--i))
}
@keyframes flip {
  0%,80% {
    transform: rotateY(360deg) 
  }
}