body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, rgb(145, 223, 61) , rgb(26, 118, 11));
  height: 100vh;
}

#waves {
  position: absolute;
  z-index: 2;
  width: 100%;
  height: 100%;
  background: transparent;
  z-index: -1;
  pointer-events: none;
}

span {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -65%);
  color: rgb(0, 0, 0);
  font-family:  'Source Sans Pro', sans-serif;
  font-size: 30vw;
}