Hi Thanks for the help, the following code works fine :-)

#nav_menu-4.widget.clearfix.widget_nav_menu{
width:300px !important;
}

#top .content .flex_column .widget_nav_menu li{ border:none !important; margin-left:10px !important; }

#top .content .flex_column .widget_nav_menu li a{ padding:0.5em 10px !important; border:none; !important; }

#top .content .flex_column .widget_nav_menu li:first-child {
border-top-style: none !important;
border-top-width: none !important;
}