borderCollapse

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Syntax: separate | collapse

Initial value: separate

| Chrome | Firefox | Safari  |  Edge  |  IE   |
| :----: | :-----: | :-----: | :----: | :---: |
|   1    |    1    |   1.1   |   12   |   5   |