Thanks for pointing out the <p> typo -- it had no effect on the problem but at least I corrected a coding typo

Everything else I'm well aware of and have tried, except for putting in no cache headers. I tried two methods (meta and regular php header) and they didn't solve this problem (unless I just missed some feed to the browser before the header, but I was careful).

Thanks for all the suggestions. I'll go back to it later. I'm thinking maybe the css has to be a frame or table style rather than just a div, but I switched out the data in my db before I could try it.