1pixel border <table> using CSS

If you trying to do this by setting border of <table>, <tr>, <td>,
you won’t get what you want.

Let’s cut the crap, just use this style.
table, td{
border-color: #000000;
border-style: solid;
}
table{
border-width: 0 0 1px 1px;
border-spacing: 0;
border-collapse: collapse;
}
td{
margin: 0;
border-width: 1px 1px 0 0;
}