I'm working on a Squarespace site and am including a 'code-block' element that has an iframe of a congressional map. I want the map to have 100% width. Using Chrome's inspector, I can see there is a ton of margin on this, so if I can just identify the selector I could fix it. Please look at:
The selector appears to be #block-yui_3_17_2_18_1510086631780_10559
but adding margin zero to that has no effect.
Since it's Squarespace, I think including the entire page of code would be non-productive. Can somebody please take a look and let me know your thoughts?
Thanks much for your time!