article {
    display: grid;
    margin: auto;
    width: 70%;
    line-height: 1.2rem;
}

img {
    width: 17rem;
    height: min-content;
}


.pic-ctn {
  width: 100vw;
  height: 200px;
}

@keyframes display {
  0% {
    transform: translateX(200px);
    opacity: 0;
  }
  10% {
    transform: translateX(0);
    opacity: 1;
  }
  20% {
    transform: translateX(0);
    opacity: 1;
  }
  30% {
    transform: translateX(-200px);
    opacity: 0;
  }
  100% {
    transform: translateX(-200px);
    opacity: 0;
  }
}

.pic-ctn {
  position: relative;
  width: 100vw;
  height: 300px;
  margin-top: 15vh;
}

.pic-ctn > img {
  position: absolute;
  top: 0;
  left: calc(50% - 100px);
  opacity: 0;
  animation: display 10s infinite;
}

img:nth-child(2) {
  animation-delay: 2s;
}
img:nth-child(3) {
  animation-delay: 4s;
}