Custom code to target a single summary item in a summary block grid.

Hi, I would like to target a specific summary item in a summary block and use custom code to change some items about that block. How do I find the right kind of code for this?

I've tried using the id of the summary item container, but that doesn't seem to work. Any ideas?

Hi,

Use 

#summary-block-id .summary:nth-child(1) {CSS}

Find block id with this tool: https://chrome.google.com/webstore/detail/squarespace-id-finder/igjamfnifnkmecjidfbdipieoaeghcff?hl=en

Count the order of summary items to determine nth-child(number)