li li {
    list-style-type: lower-alpha;
}

li li li{
    list-style-type: lower-roman;
}
figure.img-with-caption {
    border: 1px dotted gray;
    padding: 10px; /* adjust as needed */
}
figure.img-with-caption img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    padding: 10px; /* adjust as needed */
}
figure figcaption.caption {
    font-size: 1.5em !important;
    text-align: center;
}