.marcas{
    background-image: none;
    width: 100%;
    height: auto;
    margin-top: 10px;
    margin-bottom: 10px;
    overflow: hidden;
}

.marcas .marca-track{
    display: flex;
    animation: scroll 40s linear infinite;
    -webkit-animation: scroll 40s linear infinite;
    width: calc(150px * 16);
}

.marcas .marca{
    width: 150px;
}

.marcas .marca .img{
    width: 100%;
}

@keyframes scroll{
    0% {
        -webkit-transform: translateX(calc(0));
        transform: translateX(0);
    }
    100% {
        -webkit-transform: translateX(calc(-149x * 8));
        transform: translateX(calc(-149px * 8));
    }
}