File permissions aren't APPARENTLY working the way I expected

I am using hosting provided by 000webhost.com.

Root directory is: public_html I set it's file attributes to 700 by using FileZilla ftp. Also I set individual file permissions to 600.

public_html directory has only one file which is index.html. Now even though I have set puclic permission to zero as evident from right-most zero in both 600 and 700. Still I am able to view file index.html by using web browser here is the link. Why is that? I thought last zero in 600 or 700 meant public would not be able to view file, what is happening now then?