.panel_submenue
{
 background:#2C3B41 !important; 
 -webkit-transition: background 0.1s ease-in-out;
 transition: background 0.1s ease-in-out;
 border: none !important;
 border-radius: 0px !important;
}
.panel_submenue:hover
{
 background:#1A2226 !important;
 -webkit-transition: background 0.1s ease-in-out;
 transition: background 0.1s ease-in-out;
 border: none !important;
 border-radius: 0px !important;
}