#billboard, #medium-rectangle4 {text-align: center;margin: 10px auto; z-index: 100;}
.modal, .dropdown-menu-right {z-index:10000000;}
.min-z-index {z-index: 1; position: relative;}
#site-navbar-container.affix {z-index: 2000000;}
#site-navbar-container #main-navigation { z-index: 2000000 !important; }
#medium-rectangle1, #medium-rectangle2, #medium-rectangle3, #medium-rectangle4 {text-align: center; clear: both;}
#main-page-container {padding-top: 0;}
#site-navbar-container { margin-bottom: 10px !important;}