how to make underline

Answer 1

<u>element is for underline

Example:

<p>This is a <u>underline</u>.</p>

Note:The <u> element was deprecated in HTML 4.01.).

The <u> element is redefined in HTML5

Answer 2

In html5 it is better to use css to underline the text.

H1{
Text-decoration:underline;
}

Answer 3

use ins tag
<ins>.....</ins>

Answer 4

<hr>your text here</hr>