[blackxacto]

Opened an ebook in Sigil 0.7.4

Selected Styles/Stylesheet.css

I see several styles, example: .calibre1, .calibre11

I see paragraph headings: H1, H2 etc.

What is the difference in the two style types above?

If I want to make a certain subhead always center, do I change the paragraph, or the associated .calibre#? In the sample below, where is the "center" instructions to go?

.calibre11 {
display: block;
font-size: 1.125em;
font-weight: bold;
line-height: 1.2;
margin: 3em 0 1em
}