Two Column Text Box on one page only.

Hello I need to add a  Two Column Text Box on one page only. I found how to do it with CSS but it applies it site wide. I know I can create two text boxes side by side. But I need the text to flow between two columns. Any help would be appreciated. Below is the CSS I found. 

//--Two Columns p {column-count:2; column-gap:5%;}

Add a Text Block >> Add this CSS

#text-block-id>div {
	column-count: 2;
}

Use this tool to find text block id. https://chrome.google.com/webstore/detail/squarespace-id-finder/igjamfnifnkmecjidfbdipieoaeghcff?hl=en