.wave-area {
    height: 5%;
    width: 100%;
    position: absolute;
    bottom: 0;
    left: 0;
    background: white;
    z-index: 1;
}

.wave {
    background: url(../images/wave.svg) repeat-x;
    position: absolute;
    top: -100px;
    width: 6400px;
    height: 100px;
    animation: wave 35s cubic-bezier(0.36, 0.45, 0.63, 0.53) infinite;
    transform: translate3d(0, 0, 0);
}

 .wave:nth-of-type(2) {
    top: -56px;
    animation: wave 20s cubic-bezier(0.36, 0.45, 0.63, 0.53) -0.125s infinite,swell 7s ease -1.25s infinite;
    opacity: 1;
}

@keyframes wave {
  0% {
    margin-left: 0;
  }
  100% {
    margin-left: -1600px;
  }
}

@keyframes swell {
  0%, 100% {
    transform: translate3d(0,-25px,0);
  }
  50% {
    transform: translate3d(0,5px,0);
  }
}