Image size guidelines?

[sdgluck]

Some image size guidelines -- there is a big variety in sizes! And there is going to be a lot of them! (is the Webarchitects logo too big?) The services logos are scaled by WordPress, should this also be done for the tech logos and the coop logos?

(Copied over from https://wiki.coops.tech/wiki/CoTech_WordPress#Wishlist)

[chriscroome]

Here is an example of an issue caused by an image being too big, on the WordPress page the We Are Open Co-op logo overlaps the one below it when you mouse over.