Why is Firefox missing the border on some HTML tables

Question

I am using Firefox 3.5.7 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 sens

Answer 1

I had the same problem with missing table border. My solution is:

table{
  border-collapse: collapse !important;
  border-spacing: 0px;
  border: 1px solid #DDD;
}

And border for table rows:

table tr{
  border-bottom: 1px solid #DDD !important;
}

I am using Bootstrap either in my layout and the table has also bootstrap css classes like "table table-striped table-bordered"

This solution works for me, when I tried solution with

border-collapse: separate !important;

it didn't work properly for me.