Redirect from http to https (basic html site)
It is very simple to acheive that by opening your website .htaccess file and adding the below code to it, then save the file. then simple hard refresh your browser nad see the result.
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://www.yourdomain.com/$1 [R,L]
</IfModule>