<center>
<table bgcolor="#ff0066">
Same table bgcolor in all examples
<tr>
<td>(First Example)
<td bgcolor="#189CD6">(Second Example)
<td bgcolor="#191919">(Last Example)
<spacer type=horizontal width="length_of_line">
<spacer type=vertical height="height_of_line">
</td></tr></table>
</center>
If you want to make the line hollow and then add a bgcolor to the <td> tag that matches the one in your <body bgcolor="xxxxxx"> tag (last example) or use a another color like the second example. I used a width="400" for the post and I could have used width="544" on this web page but stayed with the width="400". I used <center> before each of the three (3) tables below and naturally closed each one </center>. The dimensions of each vertical and horizontal spacer was the same.
<spacer type=horizontal width="400">
<spacer type=vertical height="5">
If you want to make a vertical bar then pick the height and as an example:
<spacer type=vertical height="300">
<spacer type=horizontal width="1">