GIS Map Embedding Options
Option A (As currently embedded)
<iframe width="100%" height="400" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" title="Simple_Trail_Map" src="//waukeshacounty.maps.arcgis.com/apps/Embed/index.html?webmap=3db4d04ed39e45d0a26613282bcb6559&extent=-88.3882,43.0526,-88.3614,43.0682&zoom=true&previewImage=false&scale=true&legend=false&disable_scroll=false&theme=light"></iframe>
Option B (4.3.3 JS Library)
<!-- Add script to the <head> of your page to load the embeddable map component -->
<script type="module" src="https://js.arcgis.com/4.34/embeddable-components/"></script>
<!-- Add custom element to <body> of your page -->
<arcgis-embedded-map style="height:600px;width:700px;" item-id="3db4d04ed39e45d0a26613282bcb6559" theme="light" center="-88.3740558897784,43.06003944609077"scale="9027.977410759811" portal-url="https://waukeshacounty.maps.arcgis.com"></arcgis-embedded-map>
Option C (iframe with local-network-access)
<iframe width="700" height="600" allow="local-network-access; geolocation" title="Simple_Trail_Map" src="https://waukeshacounty.maps.arcgis.com/apps/mapviewer/index.html?configurableview=true&webmap=3db4d04ed39e45d0a26613282bcb6559&theme=light&scroll=false¢er=-88.3740558897784,43.06003944609077&scale=9027.977410759811" ></iframe>