[Lynne]

Try:

.cms_widget {
    background: none repeat scroll 0 0 transparent;
    border: 0 none;
    border-radius: 0 0 0 0;
    box-shadow: none;
}
.cms_widget .block {
    background: none repeat scroll 0 0 transparent;
    border: 0 none;
    border-radius: 0 0 0 0;
    padding: 0;
}
.widget_content {
    background: none repeat scroll 0 0 transparent;
    border: medium none;
}