EASYHTML

Which browsers support HTML5?

MEDIUMHTML

How to insert a copyright symbol on a browser page?

HARDHTML

What is the difference between span and div?

EASYCSS

Why Use CSS?

MEDIUMCSS

What is RWD?

HARDCSS

How would you use media queries in a mobile-first approach?

EASYJAVASCRIPT

Which company developed JavaScript?

MEDIUMJAVASCRIPT

What is this keyword in JavaScript?

HARDJAVASCRIPT

What is the difference between null & undefined?