.pic-ctn {width: -100vw;}@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;}.pic-ctn>img {position: absolute;opacity: 0;animation: display 10s infinite;}img:nth-child(1) {animation-delay: 2s;}img:nth-child(2) {animation-delay: 4s;}img:nth-child(3) {animation-delay: 6s;}img:nth-child(4) {animation-delay: 8s;}