stupid question, blury entry date Options

[Note]

who knows the code to make the entry date blury? like there's some kind of blury oval around the date?

::jerry::

[*NatiMarie*]

CODE

<!-- begin code provided by createblog.com -->
<style type="text/css">
div.blogheader, .caption {
/* edits the dates */
font-family:arial;
text-transform:lowercase;
font-size:11px;
line-height:30px;
font-weight:normal;
filter: alpha (opacity=100, finishopacity=0, style=2);
height: 1px;
background-color:#ff99cc;
color:white;
letter-spacing:1px;
text-align: center;
</style>
<!-- end code provided by createblog.com -->