Try to set the height trand td100%:
tr, td { height: 100%; }
Generally speaking, in order to work correctly height: 100%, you must also set all the heights of the parent elements.
EDIT:
, td div , .edit-me div 100%.
HTML:
<table border="1">
<tr>
<td>
<div class="container">
<div class="edit-me"></div>
Foo
<br/>
Bar
</div>
</td>
<td>hello</td>
</tr>
</table>
CSS:
.container {
position: relative;
padding-left: 10px;
}
.edit-me {
position: absolute;
top: 0;
bottom: 0;
left: 0;
width:10px;
border:1px solid blue;
background:red;
overflow: auto;
}
, !