I had to redesign them to work on high resolution screens. Not everyone uses the same default fonts. This can effect to look of the pages. All of this material concerns Windows-based browsers. I shudder to think what would happen if I tried to use some Macintosh-based browsers to view my site.
Many web sites require special plug-ins to view their content and special effects.
I have shied away from that practice, because if I don't want to bother downloading some plug-in, I feel that many other people would feel the same way. In conclusion Because this is such an evolving technology, you really have to be careful about what you put on the web, if you are trying to reach a large cross section of the web surfers. From the examples above, you can see all the modifications I had to make for a relatively low-tech web site. I will try to get back to you as soon as possible. Be sure to state the title or subject matter, so I know what material you are referring to.