body {
  background: blue;
  overflow: hidden;
  background-image: url(http://icons.iconarchive.com/icons/musett/dragon-ballz/256/Dragon-Ball-icon.png);
  background-repeat: no-repeat;
  background-position: 50% 10%;
}

.grad {
  background: linear-gradient(rgba(255,255,255,0), rgba(255,255,255,1));
}

.contenido1 {
  display: block;
  position: relative;
  left: 60px;
  width: 50%;
  text-align: center;
  font-family: 'Ravi Prakash', cursive;
  -webkit-text-stroke: 2px black;
  font-size: 60px;
  font-weight: 500;
  perspective: 600px;
  perspective-origin: 50% 0;
}

p {
  color: yellow;
  background: linear-gradient(to bottom, yellow 0%, red 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;

}

.izquierda {
  transform-origin: 20% 0%;
  transform-style: preserve-3d;
  transform: rotateY(30deg);
}

.ruletada {
  animation: scrolling 40s linear 0s infinite;
}

@keyframes scrolling {
  from {
    transform: translateY(25%)
  }
  to {
    transform: translateY(-100%)
  }
}

.logo {
  max-width: 100%;
  padding: 0px;
  margin: 0px;
}

.contenido2 {
  display: block;
  position: absolute;
  left: 50%;
  top: 0px;
  width: 50%;
  height: 100%;
  text-align: center;
}

.goku {
  width: 100%;
  height: 100%;
  background-image: url("http://vignette2.wikia.nocookie.net/fictional-battle-omniverse/images/8/8b/Goku_Dragon_Ball_Z.png/revision/latest?cb=20150508010447");
  background-size: 300px auto;
  background-repeat: no-repeat;
  background-position: 50% 0;
}

.goku:hover {
  background-image: url(http://vignette3.wikia.nocookie.net/vsbattles/images/5/56/Goku_%28Base%29.png/revision/latest?cb=20160315175220);
  background-size: 400px auto;
}

body:hover {
  background-image: url(http://pre15.deviantart.net/1b53/th/pre/i/2012/302/1/4/z_ball_dbz_by_fsuarez913-d5jc8v1.png);
  background-size: 300px 300px;
}