widget font size changing

i mean “list authors” plugin version 2.0.1
In side bar, authors widget, i want to
1. change font-size
2. delete gif from each line

this is “list-authors/list-authors.php” page:
https://wordpress.pastebin.com/rX3AqdmM

this is “list-authors/class-list-authors.php” page:
https://wordpress.pastebin.com/mCrFaLwE

this is “list-authors/prebaker.php” page:
https://wordpress.pastebin.com/2Am0EP7u

this is last page. “read me”
https://wordpress.pastebin.com/NTbd778Y

please help me

Install Firefox Firebug ; then when you hover over any html element; you will see the line number of all the font size css involved.

i do not think that it is only about with css. it should be about php codes

i only want to change that widget. not all css

You will need to see the css element definitiaon to change the font size

YES the gif is in the php code

cannot find the letters gif in any code your posted at pastebin

website: https://www.aligurtuna.com/
4 th widget on the right named “Edit?rler” (just below paypal widget)

i have found a function for this.

<?php wp_list_authors('show_fullname=1&optioncount=1&orderby=post_count&order=DESC&number=3'); ?>

but i can not put it into my widgets

so please help me