Should I have aside element ouside or inside of main element?
<p>Let's say <code>aside</code> element includes "Oh, by the way …" content such as reading suggestions, advertisements, or cross sells.</p>

<ol>
<li>Is it semantically okay to have <code>aside</code> outside of <code>main</code>?</li>
<li>If yes, does it have any advantage over accessibility if I keep <code>aside</code> outside of <code>main</code>, such as "skip to main content" command?</li>
<li>Last but not the least, I would like to know if there is any SEO impact if I include <code>aside</code> tag outside or inside of <code>main</code>.</li>
</ol>