.parallax {
    position: relative;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 20px;
    padding-bottom: 25px;
    background-size:cover;
}
@keyframes einblendung{
  	0%{opacity: 0.1;}
  	100%{opacity: 1;}
  }

#bgimg-1 {
  background-image: url("back2.jpeg");
  animation-name: einblendung;
  animation-duration: 1.5s;
  animation-iteration-count: 1;
  animation-timing-function: linear;
}

#bgimg-2 {
  background-image: url("back3.jpg");
}

#bgimg-3 {
  background-image: url("back6.jpg");
}
#bgimg-4{
	background-image: url("back8.jpg");
}
#bgimg-5 {
    background-image: url("back5.jpg");
}

#bgimg-6 {
  background-image: url("back4.jpeg");
}

@media only screen and (max-device-width: 1024px) {
  #bgimg-1, #bgimg-2, #bgimg-3, #bgimg-4, #bgimg-5, #bgimg-6{
    background-attachment: fixed;
  }
}