img {
  height:96vh;
  display: inline-block;
}
body {
  background-image: url(/images/hypnosis.jpg);
  background-repeat: no-repeat;
  background-size: cover;
}
p {
  position: absolute;
  font-size: 3em;
  color: white;
  text-shadow: black 4px 2px 2px;
  width: 30vw;
  animation: float 3s infinite;
}
@keyframes float {
  0% {
      margin-top: 40px; 
      background-position: 40%;
  } 
  20% {
      margin-top: 80px; 
      background-position: 80%;
} 
40% {
  margin-top:40px;
  background-position: 40%;

}
60% {
  margin-top: 80px;
  background-position: 80%;

}
}