Why do pages sometimes look different on different web browsers?

Despite the HTML being identical, different web browsers sometimes render the same page differently. This drives web developers nuts. There is no good technological reason for it, but there is a good human reason—​different web browser developers interpreted the same standards differently. Happily we’re making a bit of progress on this problem recently. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.