.demo{   background: linear-gradient(135deg,#0BA360,#30DD8A,#2BB673); }

.text-effect{
  color: #fff;
  font-family: "Concert One", sans-serif;
  font-size: 100px;
  font-weight: 400;
  text-align: center;
  text-transform: uppercase;
  animation: slideOutUp 2s linear alternate infinite;
}

@keyframes slideOutUp {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(-50%);
    opacity: 0;
  }
}

@media only screen and (max-width: 990px){
  .text-effect{ font-size: 70px; }
}

@media only screen and (max-width: 767px){
  .text-effect{ font-size: 60px; }
}

@media only screen and (max-width: 576px){
  .text-effect{ font-size: 35px; }
}