I'm using the els-cas template to write a paper aiming at Elsevier journals. I want to use the command "\captionsetup" in "caption" package to customize my caption in "Figure" environment. How can I do to achieve the results: \captionsetup{figurename=Fig.,labelsep=period,font={bf,footnotesize},center}?


\usepackage{caption}% caption package


\title [mode = title]{This is a specimen $a_b$ title}   

    \caption{My caption.} %%%%%% My caption content is short

The resultant caption format in the output PDF is enter image description here

which is the default formatting preset in the els-cas-sc class file.

Could any expert help me? Thank you very much!

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