Chapter 3 Typography
3.1 Headings
All
HTML headings, <h1> through <h6>, are available. .h1 through .h6 classes are also available, for when you want to match the font styling of a heading but still want your text to be displayed inline.
Create lighter, secondary text in any heading with a generic <small> tag or the .small class.
3.2 Text: <p> Tag
Bootstrap's global default font-size is 14px, with a line-height of 1.428. This is applied to the <body> and all paragraphs. In addition, <p> (paragraphs) receive a bottom margin of half their computed line-height (10px by default).