How to set the height of a block on webflow equal to the height of the neighboring one?

Question

css

I'm sure people who understand the front will understand. It is also desirable to understand the webflow tools, but not necessary. The main thing is that the solution does not use third-party libraries or js. In general, I need to set the height on this landing for the pop-up form https://qo-design-landing.webflow.io/ equal to the height of the left block (click on the "Order design" button and ignore the image in the right block) In general, if you shrink the browser a little in height, the left block will adjust to the height of the content and a scroll will appear. However, scrolling down, you will notice that the height of the right box is different (because of the 100vh parameter). What I need is that at min 100vh, the height of the right block is equal to the height of the left block, if the left block is higher than 100vh.