I can't seem to think it over.
It looks like adding a little padding (padding-left: 3px) to my text box and it pops it right out of my div with the border. Adding some add-on for the text inside the dashboard would be useful as it would be more readable for the user.
Here is the result: 
Here's how it should look:

Here is the HTML / CSS markup:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
.fcontent_text {
font-size: 8.5pt;
text-align: right;
color: rgb(11,63,113);
}
#fcontent_container {
width: 800px;
display: block;
position: relative;
margin: 5px;
}
#fcontent_wrapper {
border: 1px solid rgb(128,128,128);
}
#summary {
width: 100%;
margin: 0;
border: 0;
position: relative;
padding-left: 3px;
height: 50px;
}
</style>
</head>
<body>
<div id="fcontent_container">
<div class="fcontent_text">Summary</div>
<div id="fcontent_wrapper"><textarea class="normal" id="summary"></textarea></div>
</div>
</body>
</html>
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