Need help with customizing bullets in a list

Site URL: https://pentagon-nectarine-e39z.squarespace.com/umconnections

Hi all,

I have a page where I am trying to customize only one bulleted list to have checkboxes instead of round bullets. I can't seem to figure out how to target that one list rather than the whole page to do this.  I need the first list to have the checkboxes and the second to have the typical round bullets.

This is the code I used:

div#block-be562791aa62b98f5691 li p:before {
    content: "❏" !important;
}

The pass is abc123 to view it... I know, I know.

What is access password?