What are the things needed while designing webpage ?

Answer 1

HTML or HTML5 for skeleton , CSS for style , JS for "something"

Answer 2

no HTML and HTML 5 not same . Html5 has more tags then HTML (html4)

Answer 3

HTML+CSS

Answer 4

First and foremost a text editor.
you can design web pages using just HTML
you can design web pages using pure CSS
but it is best to learn both