DrawAttention is designed to be responsive. That means that all parts of the plugin resize to fit within the space available in your selected theme. If things are much smaller than you’d like, check to see if your theme as a full-width page template available, which should provide more space for the image and associated more info box.
I’m not sure why you’d want to completely hide the more info box – that would prevent your site visitors from seeing any additional information about the clickable areas of the large image. If you upgrade to the Pro version, we have a lightbox option that will let you show the more info box as a lightbox, which gives you more room for both the clickable image and the more info box.
You’re correct – the .hotspots-image-container background color is difficult to override, and we’ll fix that in the next release. In the meantime, you can add the ID of your hotspot in front of your selector to change it. I can’t give you the exact ID without being able to see your site, but if you inspect the HTML, you should be able to spot it. Your CSS should look like this:
#hotspot-38 .hotspots-image-container {
background: #fff;
}
We can’t really provide specifics on modifying the appearance and layout without being able to see what you’re working on.