Using an <hr> tag with a table?
The best way to add a horizontal line between rows is with a CSS borders. First, you want to collapse all the borders of the table so that there is no space between the cells (this might help your solution as well, but I don't recommend using hr for this purpose). Next, specify a border on the bottom-side of each cell (td). You can similarly put borders to the left, right, up, etc. See the self-contained HTML below.
<html>
<head>
<style type='text/css'>
table.test { border-collapse: collapse; }
table.test td { border-bottom: 1px solid black; }
</style>
</head>
<body>
<table class='test'>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
</table>
</body>
</html>
For more border options, check this w3Schools page.
You can try this, it is working perfectly:
<tr>
<td colspan="Number of columns">
<hr>
</td>
</tr>
I'd suggest putting:
<tr style="border-bottom: 1px solid #000;">
on every row you want the line to be on. You can also do this individually for each cell.
Update
Id recommend using a css class and a have a separate stylesheet if you can. For example
<tr class="bordered"></tr>
tr.bordered {
border-bottom: 1px solid #000;
}
You can define a CSS class for your 'separated' <tr>
:
<style>
tr.separated td {
/* set border style for separated rows */
border-bottom: 1px solid black;
}
table {
/* make the border continuous (without gaps between columns) */
border-collapse: collapse;
}
</style>
Then just mark required rows:
<tr>
<td>
<td>
</tr>
<tr class="separated">
<td>
<td>
</tr>
<tr>
<td>
<td>
</tr>
See example https://jsfiddle.net/64nydcfu/1/