.user-showcase__link {
    width: 210px;
    height: 103px;

    text-align: center;
    background-color: white;
    border-radius: 5px;
    box-shadow: inset 0px 0px 6px -1px rgba(0,0,0,0.8);
}

.user-showcase__link {
    width: 210px;
    height: 103px;

    text-align: center;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0px 1px 4px -1px rgba(0,0,0,0.8)
}

Tweak box shadow on ember users grid items
Tweak box shadow on ember users grid items

This looks so much better it's ridiculous.