If you've working SSL certificate on your website and you'd like force your website to load using 'https' in web-browser then feel free to add the below code in '.htaccess' file under root directory-
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
Let me know your thoughts on it!