Animação de ondulação “wobble” com CSS 3 utilizando keyframes

Como criar uma simples animação de ondulação “wobble” no CSS 3 utilizando keyframes e propriedades como transform e animation-duration.

Exemplo animação de ondulação

Efeito de ondulação vertical

Efeito de ondulação horizontal

CSS utilizado para ondulação vertical

A animação é executada em 6 passos, altere os valores em translateY(…px) para ajustar o movimento.

Para alterar a velocidade dos movimentos mude o valor de animation-duration (valor em segundos).

@-webkit-keyframes wobble-vertical {
  16.65% {
    -webkit-transform: translateY(8px);
    transform: translateY(8px);
  }
  33.3% {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
  }
  49.95% {
    -webkit-transform: translateY(4px);
    transform: translateY(4px);
  }
  66.6% {
    -webkit-transform: translateY(-2px);
    transform: translateY(-2px);
  }
  83.25% {
    -webkit-transform: translateY(1px);
    transform: translateY(1px);
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}
@keyframes wobble-vertical {
  16.65% {
    -webkit-transform: translateY(8px);
    transform: translateY(8px);
  }
  33.3% {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
  }
  49.95% {
    -webkit-transform: translateY(4px);
    transform: translateY(4px);
  }
  66.6% {
    -webkit-transform: translateY(-2px);
    transform: translateY(-2px);
  }
  83.25% {
    -webkit-transform: translateY(1px);
    transform: translateY(1px);
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}
.wobble-vertical {
  display: inline-block;
  vertical-align: middle;
  -webkit-transform: perspective(1px) translateZ(0);
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px transparent;
}
.wobble-vertical:hover, .wobble-vertical:focus, .wobble-vertical:active {
  -webkit-animation-name: wobble-vertical;
  animation-name: wobble-vertical;
  -webkit-animation-duration: 1s;
  animation-duration: 1s;
  -webkit-animation-timing-function: ease-in-out;
  animation-timing-function: ease-in-out;
  -webkit-animation-iteration-count: 1;
  animation-iteration-count: 1;
}

Ondulação horizontal

@-webkit-keyframes wobble-horizontal {
  16.65% {
    -webkit-transform: translateX(8px);
    transform: translateX(8px);
  }
  33.3% {
    -webkit-transform: translateX(-6px);
    transform: translateX(-6px);
  }
  49.95% {
    -webkit-transform: translateX(4px);
    transform: translateX(4px);
  }
  66.6% {
    -webkit-transform: translateX(-2px);
    transform: translateX(-2px);
  }
  83.25% {
    -webkit-transform: translateX(1px);
    transform: translateX(1px);
  }
  100% {
    -webkit-transform: translateX(0);
    transform: translateX(0);
  }
}
@keyframes wobble-horizontal {
  16.65% {
    -webkit-transform: translateX(8px);
    transform: translateX(8px);
  }
  33.3% {
    -webkit-transform: translateX(-6px);
    transform: translateX(-6px);
  }
  49.95% {
    -webkit-transform: translateX(4px);
    transform: translateX(4px);
  }
  66.6% {
    -webkit-transform: translateX(-2px);
    transform: translateX(-2px);
  }
  83.25% {
    -webkit-transform: translateX(1px);
    transform: translateX(1px);
  }
  100% {
    -webkit-transform: translateX(0);
    transform: translateX(0);
  }
}
.wobble-horizontal {
  display: inline-block;
  vertical-align: middle;
  -webkit-transform: perspective(1px) translateZ(0);
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px transparent;
}
.wobble-horizontal:hover, .wobble-horizontal:focus, .wobble-horizontal:active {
  -webkit-animation-name: wobble-horizontal;
  animation-name: wobble-horizontal;
  -webkit-animation-duration: 1s;
  animation-duration: 1s;
  -webkit-animation-timing-function: ease-in-out;
  animation-timing-function: ease-in-out;
  -webkit-animation-iteration-count: 1;
  animation-iteration-count: 1;
}

Caso você tenha alguma dúvida em como customizar a animação, fique a vontade para fazer um comentário.

Versões reduzidas

CSS reduzido da animação vertical:

@-webkit-keyframes wobble-vertical{16.65%{-webkit-transform:translateY(8px);transform:translateY(8px)}33.3%{-webkit-transform:translateY(-6px);transform:translateY(-6px)}49.95%{-webkit-transform:translateY(4px);transform:translateY(4px)}66.6%{-webkit-transform:translateY(-2px);transform:translateY(-2px)}83.25%{-webkit-transform:translateY(1px);transform:translateY(1px)}100%{-webkit-transform:translateY(0);transform:translateY(0)}}@keyframes wobble-vertical{16.65%{-webkit-transform:translateY(8px);transform:translateY(8px)}33.3%{-webkit-transform:translateY(-6px);transform:translateY(-6px)}49.95%{-webkit-transform:translateY(4px);transform:translateY(4px)}66.6%{-webkit-transform:translateY(-2px);transform:translateY(-2px)}83.25%{-webkit-transform:translateY(1px);transform:translateY(1px)}100%{-webkit-transform:translateY(0);transform:translateY(0)}}.wobble-vertical{display:inline-block;vertical-align:middle;-webkit-transform:perspective(1px) translateZ(0);transform:perspective(1px) translateZ(0);box-shadow:0 0 1px transparent}.wobble-vertical:active,.wobble-vertical:focus,.wobble-vertical:hover{-webkit-animation-name:wobble-vertical;animation-name:wobble-vertical;-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-timing-function:ease-in-out;animation-timing-function:ease-in-out;-webkit-animation-iteration-count:1;animation-iteration-count:1}

Apenas com a animação horizontal:

@-webkit-keyframes wobble-horizontal{16.65%{-webkit-transform:translateX(8px);transform:translateX(8px)}33.3%{-webkit-transform:translateX(-6px);transform:translateX(-6px)}49.95%{-webkit-transform:translateX(4px);transform:translateX(4px)}66.6%{-webkit-transform:translateX(-2px);transform:translateX(-2px)}83.25%{-webkit-transform:translateX(1px);transform:translateX(1px)}100%{-webkit-transform:translateX(0);transform:translateX(0)}}@keyframes wobble-horizontal{16.65%{-webkit-transform:translateX(8px);transform:translateX(8px)}33.3%{-webkit-transform:translateX(-6px);transform:translateX(-6px)}49.95%{-webkit-transform:translateX(4px);transform:translateX(4px)}66.6%{-webkit-transform:translateX(-2px);transform:translateX(-2px)}83.25%{-webkit-transform:translateX(1px);transform:translateX(1px)}100%{-webkit-transform:translateX(0);transform:translateX(0)}}.wobble-horizontal{display:inline-block;vertical-align:middle;-webkit-transform:perspective(1px) translateZ(0);transform:perspective(1px) translateZ(0);box-shadow:0 0 1px transparent}.wobble-horizontal:active,.wobble-horizontal:focus,.wobble-horizontal:hover{-webkit-animation-name:wobble-horizontal;animation-name:wobble-horizontal;-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-timing-function:ease-in-out;animation-timing-function:ease-in-out;-webkit-animation-iteration-count:1;animation-iteration-count:1}