Template:USEO part heading/styles.css

.wst-useo-part-heading { margin-top: 0; margin-bottom: 0; padding-top: .5em; padding-bottom: .17em; page-break-after: avoid; font-size: 1.2em; /* Mimic h3 size in current skin. Size is arbitrary and should use larger/x-larger/etc. relative size classes instead. */ }