@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-250px * 7)); }
}

.slider {
    
    height: 150px;
    margin: auto;
    overflow: hidden;
    position: relative;
    width: 1260px !important;
}

.slider::before,
.slider::after {
    /*background: linear-gradient(to right, rgba(255,255,255,1) 0%, rgba(255,255,255,0) 100%);*/
    content: "";
    height: 150px;
    position: absolute;
    width: 200px;
    z-index: 2;
}

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

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

.slider .slide-track {
    animation: scroll 40s linear infinite;
    display: flex;
    width: calc(250px * 14);
}

.slider .slide {
    height: 100px;
    width: 250px;
}