.single_img1 .gp-img-responsive {
  padding-bottom: 26.04%;
  display: block;
}

#zmlunbox {
width: 1920px;
height: 420px;
overflow: hidden;
}
#zmlunboto {
width: 5760px;
animation: switch 10s ease-out infinite;
}
#zmlunboto > img {
float: left;
width: 1920px;
height: 420px;
}
@keyframes switch {
0%,25% {
margin-left: 0;
}
35%,60% {
margin-left: -1920px;
}
70%,100% {
margin-left: -3840px;
}
}