.left_customer{
	width: 190px;
	height : 100px;
	position: relative;
}

.left_nav_parent{
	margin : 0;
	padding :0;
	width: 190px;
	background-color : #ffffffff;
}
.left_nav_parent > li{
	height : 40px;
}

.left_nav_parent > a {
	display: block;
    color: #e9ecef;
    padding: 8px 16px;
    text-decoration: none;
}

.left_nav_parent > li > a.active {
	background-color: #4CAF50;
    color: white;
}