There is 1 css file used. It can be found in advanced_maps/blocks/advanced_maps/view.css. It contains a default styles from slickslider plugin and a custom styling for the plugin. Everything is wrapped inside .world-map-container so it should not interfere with your theme styling. However there is no guarantee of that so you might need to update some styling.

If you would like to edit a specific section of the site, simply find the appropriate label in the CSS file, and then scroll down until you find the appropriate style that needs to be edited.

Any images that are placed within the blog section have 5px worth of padding and a light bluish background. If you would like to edit the display of these images, find the following section in the style sheet:

.world-map-container .minimize-map span {
    change styles here:
}