All summary blocks are "Capitalized" HELP!

Hi, I'm having an issue that i can't figure out. Every summary block that i add, converts the excerpt into Capitalized letters within each word. Whenever i try to find a setting in the Design section, i'm only able to edit the Metadata, i can't modify the body text at all, and nowhere in the design do i see fonts market as "Capitalized". Thanks for you help

I contacted squarespace and i was told that "Thanks for being patient, after taking a look, it looks like this is the expected behavior here. That said, you may be able to achieve this by adding some custom CSS. This is an advanced modification, and not something, we at Squarespace Support, will not be able to help with further, but the guide here is a good intro to where and how to add CSS to your site: "

I have no knowledge in coding, could anyone help me out with a code to fix the Capitalization to just the first word of sentence, and not all of the words?

Thank you

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