.wst-heading {
text-align: center;
}
.__part, .__chapter {
font-size: 200%;
}
.__firstchapter {
font-size: 120%;
}
.__subtitle {
font-size: 100%;
}
.__section {
font-size: 90%;
font-variant: all-small-caps;
}
.__summary {
font-size: 90%;
text-indent: -1em;
padding-left: 1em;
}