text-indent

H2 { text-indent: 5em } This is an indented H2--by 5 em spaces. See how the first line is indented from the second.

H3 { text-indent: 50% } We can also indent as a percentage of the parent element's width by specifying a number instead. This H3 is indented 50 percent.

The text-indent property can indent text by an absolute value (like 5 em spaces) or by a percentage of the enclosing element's width.