article {
  display: block;
  padding:0;
  background: #fff;
}

article div img{
  vertical-align: bottom;
  border: none;
}

article div {
  position: relative;
}

article div .btn {
  position: absolute;
  top:auto;
  right: 0;
  left:0;
  bottom: 29%;
  margin: auto;
  width: 70%;
}

article div#lp7 .btn {
  bottom: 34%;
}

.fuwa {
  animation-name: fuwafuwa;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-direction: alternate;
  animation-duration: .6s;
}

@keyframes fuwafuwa {
  0% {
    transform: translate(0,3px);
  }

  100% {
    transform: translate(0,-3px)
  }
}

@media screen and (min-width:769px) {
  article div .btn {
    bottom: 24%;
  }
  article div#lp7 .btn {
    bottom: 27%;
  }
}