I find myself in various UI areas wondering how to tell a container to be a larger or smaller size. Can someone help me understand how to tell a Div to be taller, or wider, or float right? I've reviewed this, but still can't tell how these things are done: https://theme.co/apex/forum/t/pro-header-and-footer-builder-introduction/103.
For example, I added a second row above the default 23 header and added a Search block. It floats left. Also, the first time I created a row, it came with the height set to about 250px. I couldn't figure out how to make that shorter. Nothing was in there except the search block. I'm not even sure how I got this version to be shorter. Sometimes the Setup panel has a height and width and sometimes it doesn't. Sometimes only max-width is there. Is there some protocol for how and when these show up?