html,body{
  margin: 0;
  height: 100%;
}

.banner{
  postion: relative;
  height: 100vh;
  overflow: hidden;
  display: flex;
  justify-content: center;
  color: #fff;

}

.banner:after{
  content: '';
  position: absolute; 
  z-index: -1;
  left: 0;
  bottom: 0;
}

.banner:before{
  content: '';
  width: 100%;
  height: 100%;
  position: absolute; 
  top: 0;
  left: 0;
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  -ms-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateZ(0) scale(1.0, 1.0);
  -moz-transform: translateZ(0) scale(1.0, 1.0);
  -ms-transform: translateZ(0) scale(1.0, 1.0);
  -o-transform: translateZ(0) scale(1.0, 1.0);
  transform: translateZ(0) scale(1.0, 1.0);
  background-image: url(images/1.jpg);
  -webkit-background-size:cover;
  background-size:cover;
  background-attachement:fixed;
  animation: increase 60s linear 10ms infinite;
  -webkit-transition: all 0.2s ease-in-out ;
  -moz-transition: all 0.2s ease-in-out ;
  -ms-transition: all 0.2s ease-in-out ;
  -o-transition: all 0.2s ease-in-out ;
  transition: all 0.2s ease-in-out ;
  z-index: -2;
}

.banner-text{
   width: 60%
   padding: 35% 10% 0 10%;
   text-align: center;
}

.banner-text h1{
   text-transform: uppercase;
   font-size: 40px;
   background-color: rgba(0,0,0,0.5);
   padding: 15px;
}

@keyframes increase {
   0%{transform:scale(1)}
   100%{transform:scale(1.5)}
}