.main_img {
    z-index:10;
    opacity: 0;
    width: 7%;
    height: 100px;
    background-position:center;
    background-repeat: no-repeat;
    background-size: cover;
    position: absolute;
    left:1655px;
    top:32px;
     -webkit-animation: anime 18s 0s infinite;
    animation: anime 18s 0s infinite; }

animation: anime 18s 0s infinite;

main_img:nth-of-type(1) {
      -webkit-animation-delay: 6s;
      animation-delay: 0s; }

 .main_img:nth-of-type(2) {
      -webkit-animation-delay: 12s;
      animation-delay: 6s; }

    .main_img:nth-of-type(3) {
      -webkit-animation-delay: 18s;
      animation-delay: 12s; }

@keyframes anime {
  0% {
        opacity: 0;
    }
    8% {
        opacity: 1;
    }
    17% {
        opacity: 1;
    }
    25% {
        opacity: 0;
        transform: scale(1.2) ;
         z-index:9;
    }
    100% { opacity: 0 }
}