i removed the mentioned css code but it din’t workout

@media (max-width: 576px) {

.info-box-carousel .owl-item {
width: 100px !important;
}

}

i want display categories using the carousel help me to do one cause i tried in different ways but im unable to achieve it. i have attached the reference site url and image of the reference
site please help me to create a carousel similar to the reference one with showing 3 categories on each slide

reference url : https://www.zaydns.com/