HTML Text Decoration codes are given below. Open notepad, write the codes like below, now save this as test_heading.html & open the file in any browser and see the output.
<html>
<body>
<p><a style="text-decoration:none;" href="http://www.html.am">Link with no underline...</a></p>
<p style="text-decoration:underline;">Normal text with underline</p>
<p style="text-decoration:line-through;">Text with a line through the middle</p>
<p style="text-decoration:overline;">Text with an overline</p>
<p style="text-decoration:blink;">Blinking text (doesn't work on all browsers)</p>
</body>
</html>
See the HTML Aligning Text.
<html>
<body>
<p><a style="text-decoration:none;" href="http://www.html.am">Link with no underline...</a></p>
<p style="text-decoration:underline;">Normal text with underline</p>
<p style="text-decoration:line-through;">Text with a line through the middle</p>
<p style="text-decoration:overline;">Text with an overline</p>
<p style="text-decoration:blink;">Blinking text (doesn't work on all browsers)</p>
</body>
</html>
See the HTML Aligning Text.