How to adjust code block layout

Site URL: https://www.clarendon.com/new-index-3#development-map

Need help please. I'd just like to make a very simple adjustment to the existing page I created. I need the map from Squarespace/website to look exactly how it shows in Storymap. Also, there should only be 1 sidebar on the right. Please see the attachments. The added map was used with custom code in a Code Block.

Hi. Add to Design > Custom CSS

/* Map */
div#block-yui_3_17_2_1_1616014323855_2054 {
    width: 100%;
}
section#development-map>div {
    padding-left: 10px;
    padding-right: 10px;
}