Input Box Size issue with IE.

<apexutputPanel styleClass="popup" layout="block">
<a href="#" onclick="ResetFeedbackForm('feedbackPopup');"><img src="{!URLFOR($Resource.Wirestone,'Images/Tile_Images/CP3_X.png')}" style="float:right;"/></a>
<table width="100%" height="100%">
<tr><td colspan="2" align="center"><apexutputLabel styleclass="page-title">{!SubmitFeedbackLabel}</apexutputLabel></td></tr>
<tr height="100%"><td colspan="2"><textarea id="feedbackText" onkeyup="ToggleFeedbackSubmit()" onmousemove="ToggleFeedbackSubmit()" class="textfeedback" /></td></tr> 
<tr><td>&nbsp;</td><td/></tr>
<tr>
<td align="center"><input type="button" id="feedbackSubmit" value="{!submitLabel}" class="btn-gray btn-gray-small text-gray" disabled="true" onclick="SubmitFeedback()"/></td>
<td align="center"><input type="button" id="feedbackSubmit" value="{!cancelLabel}" class="btn-gray btn-gray-small text-white" onclick="ResetFeedbackForm('feedbackPopup')"/></td>
</tr> 
</table>
</apexutputPanel>

.textfeedback
{
width:100%;
height:100%;
margin-bottom: 10px;
resize:none;
 
 
}