Code
This website has a Google Tag Manager script included in the source code which Envylabs most likely uses for tracking and analytics purposes. The code also shows code for the Yoast SEO plugin which is generally used in WordPress websites. Based off of several URLs in the code that contain "wp" and the WordPress logo favicon when viewing the source code, this website appears to be a WordPress website. Another interesting thing that I noticed when reviewing this code is that there are several lines where there is a class and an id, not one or the other. Usually only the class or an id is needed and not both, but it's possible that both were needed for tracking purposes in Google Tag Manager or another reason.
User Interface - UI
The Envylabs website is visually appealing and the green section where the H1 is located is fun to move the mouse over since the graphics have movement. The text is easy to read on the light green background towards the top of the home page and is also easy to read at the bottom of the page where the background is darker and the text is a lighter color. All the colors generally compliment each other and the text passes the ADA contrast checker. Extra padding between sections gives the pages a clean modern look and feel.
User Experience - UX
The Envylabs website has a good load time with about 2 seconds per page. In addition to working well on a desktop, the Envylabs website also works well on mobile devices. The text is a readable size and the user does not need to zoom in at all. Each link that was clicked worked and successfully loaded a new page so that users have a smooth experience.
Summary
Overall, Envylabs has a clean modern layout and the website is easy to use for users. The website colors look nice, it's easy to read, there's no noticable broken links, the site load time is good, and it's mobile friendly.