css header sizes code example
Example 1: html h1 left align
<h1 style="text-align:center">Titulo 1</h1>
<h2 style="text-align:left">Titulo 2</h2>
<h3 style="text-align:right">Titulo 3</h3>
<h4 style="text-align:justify">Titulo 4</h4>
<p>...</p>
Example 2: css h sizes
h1 => 32px (2em)
h2 => 24px (1.5em)
h3 => 20.8px (1.3em)
h4 => 16px (1em)
h5 => 12.8px (0.8em)
h6 => 11.2px (0.7em)