Some things you could say about the technics of a page:

• Choose View > Source in your browser (or press CTRL+U) and try to figure out what tool is used to create the page (eg. WordPress, Dreamweaver, Muse)
  eg. this will tell it is made with WordPress: <meta name="generator" content="WordPress 5.2.3" />
• If WordPress is used, what’s the name of the theme? (scan the source for .../wp-content/themes/xxx/... where xxx will be the name of the theme)
• If a template was used, scan the head. See if it contains the included stylesheet of the template. For example for a w3.css template:
  <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
• If no template is used and the site is not build with WordPress, there is a good chance it is build in plain HTML + CSS. Then, you might be able to explain how the layout is made, for instance by using the Inspect function of your browser. Does it use div’s/nav/header/footer elements? How are these positioned?
• Does the Portfolio page use a gallery? If yes, what gallery?
• Does the page use Javascript/JQuery/plugins? If yes, can you figure out were it was used for?