Where is localhost

[avtuvy]

I am new to the Linux world so excuse my ignorance. I installed XAMPP successfuly and I am able to access the test web page (http://localhost/....)
I need to place more files in the web server directory but I cannot figure out where it is. Please help

[Xardas der Dunkle]

Its locates at: /opt/lampp/htdocs

[avtuvy]

Thank, it solved the problem