.sea {
  position: absolute;
  width: 100%;
  bottom: 0;
  left: 0;
}

.wave {
  position: absolute;
  background-repeat: repeat-x;
  width: 100%;
  height: 60px;
  top: -60px;
  background-image: url('../img/wave-1.svg');
}

@media screen and (max-width: 642px) {
  .wave {
    display: none;
  }
}