.about-carousel {
    margin: 0px;
    padding: 0px;
    width: 100%;
    height: 800px;
    overflow: hidden;
}
@media (max-width: 576px) {
    .about-carousel {
        width: 100%;
        height: auto;
    }
}

.about-carousel > .carousel > .carousel-item {
    width: 100%;
    height: 300px;
    overflow: hidden;
}