Create a checkout page and add some functionality

Create a website page and add a few features. I need to accomplish the following types of requirements. 1. Mimic these two pages. [login to view URL] On the home page of my website, add a hover button like this at the bottom. All pages of the site will have a small pop-up window with information about the order, like the screenshot below. The information in this small window is something that I can customize the content of. 2. Create a page like this:[login to view URL] The customer does not need to fill in address information, billing information, just his name, email and notes, and choose credit card or paypal to pay directly. Add a required box for order notes, because I need the customer to fill in his name, gender and date of birth in this box. I have uploaded two products on my website and I want these two products to be selected directly by the customer and then the order will be paid directly on that page with paypal and credit card payment support. 3. Please use elementor to build the checkout page, so that I can freely modify some content, pictures, etc. on this page later. 4. I have bound my paypal account. [login to view URL] the above procedures need to be recorded and sent to me. I need to learn these steps. [login to view URL] this job within 24h and place an order to test if it can collect the money properly (cancel the order after testing).