.ui-dropdownchecklist-item {
    background: white !important;
    line-height: 130%;
}

.ui-dropdownchecklist-selector {
    background: white !important;
}

.ui-dropdownchecklist.ui-dropdownchecklist-selector-wrapper.ui-widget
{
	padding-left: 4px;
	padding-right: 20px;
	height: 20px;
	border: 1px solid #ddd;
	border-right: 0;
	background: #fff url('images/dropdown.png') no-repeat center right;
   
}

.ui-dropdownchecklist-text
{
	font-size: small !important;

	margin-right: 17px; /* background dropdown.png image */
	text-align:left; 
}