I've read the description and I'm really interested to help.
I've done many React projects, including when I was doing internship at one of the biggest e-commerce in Indonesia, Tokopedia.
I was the initiator to port from bare HTML Jquery into fully React app.
And also I'm one of member contributor @freecodecamp, the biggest JavaScript stacks online free learning resource.
I can build usable component for this modal, do you want me to build as a library or attach it to your current ongoing project?