.rel-links {
    overflow: hidden;
    position: relative;
}


.scroll-container {
     
}

.scroll-content {
    display: flex;
    align-items: center;    
    animation: scroll 20s linear infinite;
}

.card-item {    
    padding: 16px;        
    text-align: center;
    box-shadow: 0 2px 6px rgba(0,0,0,.08);
}

/* optional: pause on hover */
.scroll-container:hover .scroll-content {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
    /* move left by half (one set) */
}