As for the white space, you realistically got two options, 1st is the margin of the QR code image, and 2nd is the padding of the card. The way I'd approach this is pretty much the same, trial and error eyeballing.
When it comes to the text color, the CSS property "color" lets you set the color of the text, see the reference below: https://www.w3schools.com/css/css_text.asp
You could try different shades of gray to see which one works best, if you want an exact value however, one thing you could do is to import the sample image to paint, use colour picker tool on the gray paragraph, and then navigate to the Edit colours tool and this should give you the exact rgb values of the color you picked.
I hope that will help, overall good job!
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@LyttleGC
Posted
@greenMakaroni thanks for the response! Sounds good for the white space.
As for the text color, that's what I was thinking, I just went with what was given in the style guide. You definitely gave me good ideas though moving forward so I appreciate you Makaroni!