text-indent

Indents (leaves empty space) the first line in a text-block.

text-indent: <value>;

The amount of indentiation can be specified by using percentages or length values (px, em, etc):

Specifying indentation lenght with percentages.

p {
  text-indent: 20%;
}

Specifying indentation lenght with px and em values.

.div1 p {
  text-indent: 50px;
}

.div2 p {
  text-indent: 2em;
}