1) Created a new page and pasted the html in the text tab.
2) Pasted the css in the Additional css (tried also to put it in the same html page, wrapped in style tags)
3) Pasted the js in the wp_head hook between script tags (tried also to put it in the same html page, wrapped in script tags).
1) Is it better to use Simple CSS or Additional CSS?
2) Does all JS go into the wp_footer hook? Even if the script is only supposed to work on specific pages?
3) Is it still necessary to use a child theme?