how to set table border or table's outside border with some color and size but the cells of the table have border size=0
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| ------- ------ |
| | 1 | | 2 | |
| ------- ------ |
| 3 |
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- container 1 & 2 : which are the cells have border=0
- container 3 : which is the table itself has border=1 * color = #333333