As you can see in the theme’s stylesheet, Cubic’s responsive breakpoints are:
<= 568px
<= 768px
<= 1024px
If you want to modify those, you’d need to override them in your custom CSS.
You can learn more about using media queries that target certain screen sizes here:
https://en.support.wordpress.com/custom-design/custom-css-media-queries/
https://css-tricks.com/snippets/css/media-queries-for-standard-devices/
https://webdesignerwall.com/tutorials/responsive-design-with-css3-media-queries
Also is there anyway to make it so that bigger screen resolutions show 4 images per row instead of 3?
No, there isn’t an easy way to do that in Cubic, which is already a child theme.
“Image” is a link to the all images with the headers that we got rid of. How do I get rid of that image link?
You can hide the link to the post format on single posts by adding this to your custom CSS:
.single .post-format-link {
display: none;
}
I been looking for it but I realize that it is best to create a child theme unless we can accomplish it by editing the CSS in the Custom CSS section.
Cubic is already a child theme of Boardwalk, so it’s not possible to make a child theme of Cubic.