Sidebar image partially hidden

I’ve added a right sidebar (sidebar2) to my template (SimpleG) and I’m trying to display an HTML image using the Add HTML/Javascript Widget.

The problem is the image only partially shows. I think the problem is in my CSS for sidebar2, but I can’t figure it out. Here is the CSS, if anyone can help. You can view the issue here, https://societrends.com/2009/05/04/marketility-of-mobile-marketing/.

CSS:

#sidebar2 {
float:right;

width:150px;
height:460px;

font-size:12px;
}
#sidebar2 h3 {
font-size:120%;
border-bottom:1px solid #D2D2D2;
padding:5px 0;

}

#sidebar2 span {
color:#b5b5b5;
padding-right:15px;
font-weight:normal
}