Blockquote author

Hi,

Not sure how to do this so looking for some advise….

How could i configure my theme so that blockquotes are say in one size font and the author of the quote is in another size font beneath it. I’m not looking for the css that bit is fine, i’m looking for advise on the process and how to implement it. Wondered if it would be a custom field entered straight after a block quote – is that possible?

Thanks