.card {
    /* Add shadows to create the "card" effect */
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    transition: 0.3s;
    margin: 15px;
    padding: 15px;
    width: 150px;
    display: inline-block;
    text-align: center;
}

.card-header {
    padding-bottom: 20px;
}

.card-footer {
    border-top: 1px solid darkgray;
    padding-top: 15px;
}

/* On mouse-over, add a deeper shadow */
.card:hover {
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2);
}

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

.card-header img {
    max-width: 150px !important;
    height: 150px !important;
}