You can start with this as a “base” and build on it.
.categories-and-latest {
flex-direction: column;
}
.category-list .category-description,
.category-list .subcategories,
.category-list tr .topics,
.category-list th {
display: none;
}
.category-list tbody .category {
border: none;
width: 100%;
display: block;
height: 100%;
padding: 0;
box-sizing: border-box;
}
.category-list tbody tr[class] {
display: inline-block;
width: 200px;
height: 200px;
margin: 20px;
border: 1px solid black;
text-align: center;
line-height: 200px;
}
.category-list tbody {
text-align: center;
}
Of course this is very rough and hard coded but should help you get started.
Result: