body{
  background-color: black;

}

pre{
  color:#333;
  font-size: 45px;
  z-index: 50;
  position: relative;
    animation: color-change 12s infinite;
}

.pre2{
  /*color:#333;*/
  font-size: 35px;
  z-index: 50;
  position: absolute;
  top:100px;
  text-align: right;
  margin-right: 100px;
  animation: color-change 8s infinite;
}

.pre3{
  margin-top:500px;
}

@keyframes color-change {
  0% { color: black; }
  50% { color: #666; }
  100% { color: black; }
}

.big{
  font-size: 65px;
}

.container{
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  position: relative;

}