Hello World!
Comments-HTML
<html>
<head>
<body>
<p>
<b>
<i>
<strong>
<em>
<s>
<u>
<big>
<tt>
<title>
<meta>
<base>
<link>
<script>
<noscript>
<style>
<h1>
<h2>
<h3>
<h4>
<h5>
<h6>
<ul>
<ol>
<li>
<dl>
<dt>
<dd>
<table>
<tr>
<th>
<td>
<thead>
<tbody>
<tfoot>
<caption>
<col>
<colgroup>
<form>
<input>
<textarea>
<select>
<option>
<button>
<label>
<fieldset>
<legend>
Datalist
META Tags
Open Graph
Twitter Cards
Geotagging
<video>
<audio>
<iframe>
controls
autoplay
loop
muted
poster
src
type
<abbr>
<acronym>
<address>
<applet>
<area>
<basefont>
<bdo>
<dir>
<font>
<frame>
<frameset>
<hr>
<map>
<menu>
<noframes>
<object>
<optgroup>
<param>
<span>
<strike>
<sub>
<sup>