У вашего броузера проблема в совместимости с HTML5
XAMPP is a cross-platform utility that will allow us to deploy web services on our local PC. It's much quicker and easier to set up than installing Apache, PHP, and MySQL manually. And of course, since we'll be installing vulnerable web applications, we're going to want to walk through how to properly lock down XAMPP to our local system. Once XAMPP is installed, we'll be free to deploy any web application we choose. A good first testing program is actually Damn Vulnerable Web App (or DVWA for short). So we'll install and configure that for now.
XAMPP Website:
http://apachefriends.org/
DVWA Website:
http://dvwa.co.uk/