Specifies line height, enabling to you to set lines of text appearing closer together or further apart.
See also: letter-spacing and word-spacing properties.
Eg:
<p style="line-height: 10px">
This is a paragraph with a smaller line-height.
This is a paragraph with a smaller line-height.
This is a paragraph with a smaller line-height.
This is a paragraph with a smaller line-height.
</p>
<p style="line-height:30px">
This is a paragraph with a bigger line-height.
This is a paragraph with a bigger line-height.
This is a paragraph with a bigger line-height.
This is a paragraph with a bigger line-height.
</p>
Outputs: