HTML & Java plain website enhancements needed

I published a website online using an HTML & java template from Envato & now I would like to add 2 features to the site: 1) authorization landing page - page that says welcome that asks for username & code to enter. I’m not worried about encryption or building out some super secure site because the data is just my stuff. 2) small voice/video player - right next to certain paragraphs of text, i would like a little player w. play button there to give users option to listen to a prerecorded mp4 of me summarizing what that paragraph says. Open source is fine. Would be great if we could get this accomplished in 1-2 days. NOTE ** Looking for plain code though, short & sweet & clean enough for anyone savvy to understand it. Here is the live preview of the template I got from Envato: [login to view URL] ** Please, must be able to speak English and engage in conversation; not “disappear”, please and Thank You!