why is firefox missing the border on some html tables

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+3 Q:

why is firefox missing the border on some html tables

i am using 3.5.7 version of firefox and i have the same css used in multiple html tables but there are some examples where parts of the borders are not shown.

What makes no sense to me is that the same css on the same page for another html table works fine. Also, the same page in Internet Explorer looks fine from a border point of view.

here is an image with an example: (as you can see in this case the bottom of the first table is missing a border)

Does anyone have a clue why this would happen here?

alt text

+4 A:

Maybe you've zoomed in/out a bit. This can happen either accidently or knowingly when you do Ctrl+Scrollwheel. Maybe it isn't completely resetted to zoom level zero. This mis-rendering behaviour is then recognizeable at some websites, also here at SO.

To fix this, just hit Ctrl+0 or do View > Zoom > Reset to reset the zoom level to default.

BalusC 2010-01-14 02:22:18

you are right . . that works. but i still dont get it . .why would zooming remove some borders but not others ??

ooo 2010-01-14 02:24:46

It's hard to halven the thickness of a one-pixel thick line. As said, it's just a mis-rendering behaviour.

BalusC 2010-01-14 02:27:17

As an example, try to zoom out the SO page you're facing now. You'll see that the tabs `oldest`, `newest` and/or `votes` here above will virtually lose their border-bottom at certain levels.

BalusC 2010-01-14 02:34:21

interesting . . i guess it makes sense . .but i would still expect it to be consistent across the same size element.. so i would expect every table to lose its border consistently

ooo 2010-01-14 02:51:26

No, surely not. If you shrink from e.g. 800px height to 799px height, then there's still only 1px line which can be dropped.

BalusC 2010-01-14 11:17:24

ansaurus

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why is firefox missing the border on some html tables

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