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I'm seeing you already have customized your form with CSS.
You have this line below that dictates the font-weight of the labels (which I suppose what you meant when you said Question Header / Question Options):
Just change the weight value to 600 or 800 to make it appear a bit bolder / stronger. To see the difference, here's how it looks like after adjusting the weight:
In case we misunderstood your question, just get back to us with a bit more info and a clearer description of what you're trying to do so we can better assist you.
Glad that helped. Your last question has been moved to a separate thread https://www.jotform.com/answers/1053983
We'll have it addressed there shortly.