.itemList {
    display: flex;
    flex-wrap: wrap;
}

.itemList li {
    flex-basis:calc(100% / 3);
    padding: 0 1%;
}

.itemList li a {
    display: block;
    margin-bottom: 0.5rem;
}

.itemList li a:first-of-type {
    /* height: 80%; */
}

.itemList li a img {
    width: 100%;
    /* height: 100%; */
}

/* media queries
----------------------------------------------- */
@media screen and (max-width:414px){
    .itemList li {
        flex-basis:100%;
    }
}