.slider {
    height: 250px;
    margin: auto;
    overflow: hidden;
    position: relative;
    width: 1140px;
}

.slider::before, .slider::after {
  
    content: "";
    height: 100%;
    position: absolute;
    width: 100px;
    z-index: 2;
}

.slider::after {
    right: 0;
    top: 0;
    -webkit-transform: rotateZ(180deg);
    transform: rotateZ(180deg);
}

.slider::before {
    left: 0;
    top: 0;
}

.slider .slide-track {
    animation: scroll 20s linear infinite;
    display: flex;
    width: calc(250px * 18);

}

.slider .slide-track:hover {
    animation-play-state: paused;
}

.slider .slide {
    height: 250px;
    width: 250px;
}




@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-250px * 9));
    }
}