style.css

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@100&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto';
  background: #000;
}

section {
  position: relative;
  text-align: center;
  width: 100%;
  min-height: 100vh;
}

section h2 {
  position: absolute;
  top: 50%;
  left: 37%;
  color: #fff;
  font-size: 4em;
  transform: translateY(0px);
  animation: float 5s ease-in-out infinite;
}

section p {
  position: absolute;
  top: 60%;
  left: 38%;
  transform: translateY(0px);
  color: #fff;
  font-size: 1.4em;
  font-weight: 300;
  animation: float 5s ease-in-out infinite;
}

#bg{
  max-width: 100%;
  left: 0px;
  top: 0px;
}

.luz {
  position: fixed;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
}

@media only screen 
  and (min-device-width: 320px) 
  and (max-device-width: 480px)
  and (-webkit-min-device-pixel-ratio: 2) {
    
    section p {
      top: 62%;
      left: 7%;
    }

    #bg {
        display: none;
    }

    section h2{
      top: 39%;
      left: -2%;
    }
}

@media only screen 
  and (min-device-width: 768px) 
  and (max-device-width: 1024px)
  and (-webkit-min-device-pixel-ratio: 2) {
    
    section p {
      top: 60%;
      left: 21%;
    }

    #bg  {
        display: none;
    }

    section h2{
      top: 50%;
      left: 19%;
    }
}

@keyframes float{
  0%{
    transform: translateY(0px);
  }

  50%{
    transform: translateY(-20px);
  }

  100%{
    transform: translateY(0px);
  }
}