<div class="ocean">
  <div class="wave"></div>
</div>
html,
body {
  height: 100%;
}

body {
  background:#433388;
  overflow: hidden;
}

.ocean {
  height: 5%;
  width: 100%;
  position: absolute;
  bottom: 0;
  left: 0;
  background: #6b5da4;
}

.wave {
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/756881/wavePurple.svg) repeat-x;
  position: absolute;
  bottom: -10px;
  width: 6400px;
  height: 198px;
  animation: wave 12s cubic-bezier(0.36, 0.45, 0.63, 0.53) infinite, swell 8s ease -1.25s infinite;;
  transform: translate3d(0, 0, 0);
}



@keyframes wave {
  0% {
    margin-left: 0;
  }
  100% {
    margin-left: -1600px;
  }
}
@keyframes swell {
  0%,
	100% {
    transform: translate3d(0, -40px, 0);
  }
  50% {
    transform: translate3d(0, -10px, 0);
  }
}
.endWave{
	display:none;
}

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.