Can't remove border and shadow

This widget is amazing–but I need a little help to customize it to improve the appearance on my site.

I am not able to target the border and drop shadow on template three. I assumed it would be in the advps-style.css but can’t find it; I’ve tried changing the border to none in advps-style.css and jquery.bxslider.css and nothing changes.

Any help would be greatly appreciated. I’ve been hunting for that line of code for hours. I can target it through the inspect element tool and it takes me to:

<div class=”bx-viewport” style=”width: 100%; overflow: hidden; position: relative; height: 312;”>

inline 437
#advps_container3 .bxwrapper .bx-viewport {
background: #FFF none repeat scroll 0% 0%;
box shadow: 0px 1px 4px #000;
border: 1px solid #444
}

Where do I find this to change it??

Thanks immensely!

The website:
http://www.alaskapublic.org/community-affairs/

https://ww.wp.xz.cn/plugins/advanced-post-slider/