.caseStudy_links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.caseStudy_links a {
    width: 29.9%;
}
@media screen and (max-width: 999px) {
    .caseStudy_links {
        display: grid;
    }
    .caseStudy_links a {
        width: 100%;
    }
}