Set section Height with CSS

Can someone help me write the correct CSS code to decrease the section height for 3 sections I created that have a codeblock in it. 

Attached you can find screenshots of a specific section with the codeblock. I created these sections for anchor links. Since I can't add a code block to the section I want to link it too via the section above it.

The sections are on the homepage. 

Website link: https://tuatara-rectangle-rbam.squarespace.com/
Password: testing

Code ID's for each section:

section[data-section-id="643caf6bf9a41a406ca0dd6e"]

section[data-section-id="642cd8f94b72d81ef788cbb8"]

section[data-section-id="643cb08749b6071c3aeb88c6"]

Code blocks are a little buggy in 7.1 Fluid Engine, if you try a markdown block instead you should be able to make the block just one row tall without CSS.

I would suggest using <span> instead of <p>

<span id="Testimonials"></span>