How to create a text box allowing text to be written using different fonts, overlaying a long rectangular image

Site URL: https://suzan-terzian-draft.squarespace.com/homepage-content

Hi everyone,

Please refer to the following reference site https://www.marieforleo.com, the 2nd image & text block when you scroll down (i.e. "Hi, I'm Marie. An entrepreneur.....")

My client would like to have a similar look as well for her 2nd image, i.e. a text box on the right allowing text to be written using different fonts types & sizes, overlaying a rectangle image that stretches across the entire page.

I tried using Squarespace's available image blocks features (e.g. card, inline etc), but realized that it doesn't seem to have the above look.

Will anyone be able to help?

Using Brine template, Squarespace 7.0

John