Q2:Why are the images in other people’s categories on the left side of the text in mobile browsers, but mine is above the text? I checked the size of my image and it is also 200px, but the display results are different? Why is this?
@sweet_Girl were you able to resolve your issue? Looks like you did not provide enough detail to enable anyone to help you. It can be tricky considering that Discourse can be customized in many ways!
Is the component you are referring to the Featured Categories Header component? If so, that is not an official component so you will need to reach out to the author in that topic for help.
However, the community you shared has a custom layout design for the cards. This is an advanced solution. They likely picked none on the layout setting and then added custom CSS to get exactly the layout they want.