AlReaderX has its limitations in recognising document styles. This is indisputable even for those of us who use it as a preferred (non-exclusive) reading program. For those who are really interested, the author of the AlReaderX program left an explanation of CSS support here:
https://4pda-to.translate.goog/forum...#entry85222479
Of course I have my personal reasons for preferring it to other reading programs, but that is something I will not discuss with other people. Everyone should use the reading program that they like best, not the one that others like best. I see it as simple as that.