The legends created by WAP / AGOL are shaped and defined by ESRI. Recently, my web group was working with me on a map development for a specific use case. In the process, I turned off the legend in the map and they embedded the map and created a custom legend in the HTML surrounding the embedded map. It was gorgeous. I forgot what a nice looking legend can do for a map.
So now I am thinking for some future maps, I would rather just develop an HTML blurb with custom CSS/etc. and have THAT be my legend.
Is there a custom HTML popup / Widget that can be used to display custom HTML in lieu of a legend or even just as HTML popup?