By default website is loaded from the public_html folder of hosting account. The public_html directory is also called document root folder.
If you’ve created a test website under a sub-folder and you want it to be displayed when you type your domain name, add the following lines to the .htaccess file in the public_html folder:
RewriteEngine on RewriteCond %{HTTP_HOST} ^domain-name.com$ [NC,OR] RewriteCond %{HTTP_HOST} ^www.domain-name.com$ RewriteCond %{REQUEST_URI} !folder/ RewriteRule (.*) /folder/$1 [L]
In the above lines you should replace the following 2 strings:
domain-name.com – Type your own domain name
folder – Type the name of the sub-folder which has the demo/test website
Incase there is no .htaccess file you may create a new .htaccess file using filemanager in cpanel.