Redirect users based on browser language (not in php)
<p>My website will be in 3 languages. French (fr) is the default language.
The structure of the site is the following:</p>

<p>Root directory (note: I'm not using php files, just plain html)</p>

<pre><code>/fr/
    Index.html
    About-us.html
    Contact.html

/en/
    Index.html
    About-us.html
    Contact.html

/de/
    Index.html
    About-us.html
    Contact.html
</code></pre>

<p>I got  questions:</p>

<ul>
<li>What is the best practice to redirect users based on their web browser language? Via htaccess?</li>
<li>Do I need a index.html page at root level (for SEO reason or any other reason) ? The French index.html perhaps?</li>
</ul>