Change background color and size of About Widget

AndrewBernish__MDOT_

I am trying to change the background color and size of the About Widget in ArcGIS Web App Builder. I am using the Foldable Theme. My map is here: https://bit.ly/MDOT_Map_Vaccine and a screenshot of my current existing About image is pasted below. I do not like the legend widget because of the spacing and size so I created my own legend as an image (and used the About widget to place it). I want to make the background of this panel black and decrease the size so it doesn't cover so much of the map. I tried background-color and followed this post, but the answer is no longer there. Really - I just don't know where to add the code (if in ago-assistant, where or in the HTML snippet where?). 

Thanks!

 

RobertScheitlin__GISP

Andrew,

   These are some css rules that would work for that specific application.

#uniqName_20_1.jimu-widget-frame.jimu-container {
    background-color: black;
}

div#_24_panel {
    width: 350px !important;
    height: 350px !important;
}