You can try adjusting the settings in these declarations in the stylesheet.css

.calendar {
position: absolute;
background: url(../images/calbg.gif) no-repeat;
top: 122px;
right: 10px;
height:87px;
width:100px;
}
.year {
position: absolute;
top:129px;
right:22px;
font-weight:bold;
font-size:1.3em;
}
.month {
position:absolute;
top:127px;
right:62px;
font-weight:bold;
font-size:1.7em;
}
.day {
position:absolute;
top:164px;
right:42px;
font-size:3em;
font-weight:bold;
}

And since you aren't using it, you could delete index_home.css