JudeG

Okay, let's try this instead:
.event-time-localized { display:none !important; }  

You are exactly right. You'll need to build up CSS selectors to take care of each kind of image you want to have rounded corners on.
Here is a start. Add the following to Design > Custom CSS.
.products .grid-image-wrapper, .image-block-wrapper, .ProductItem-gallery-slides-item.selected, .sqs-gallery-design-grid-slide .image-slide-anchor { border-radius: 25px; } This is for a v7.1 site. You can change the 25 to suit.
If you want different border radiuses for different types of images then you'll need to create additional rule sets.
Let us know how it goes.

Is there a way to use the summary block work around, but have the link open in a new tab or window instead of navigating away from your page?
 

On Squarespace, blog post URLs always begin with the Blog Page URL slug, for example, domain/blog-name/post-name. You cannot remove this.
However if you keep the post titles the same when you import them, you can move your blog to Squarespace without losing the original links.
To do this go to Settings > Advanced > URL Mappings then add the following single line of text, where "blog" is the name of your new Blog Page.
/[name] -> /blog/[name] 301 When you save your changes, all imported blog posts can be reached with their original links. For example, domain.com/post-name will automatically send the visitor to domain.com/blog/post-name.
You'll find more information in the Squarespace guide entitled URL redirects.