Format the submenu

How can I format the options displayed in the submenu, color, link, background, etc.

delinea
Hi
here is code you can use custom.css file for this change.

.t3-megamenu .mega-dropdown-menu {
    background: #ffffff;
    font-size: 13px;
    border-color: #999999;

}

for dropdown menu item color use this code

.t3-megamenu .mega-nav > li a, .t3-megamenu .dropdown-menu .mega-nav > li a {
    color: #222222;
    padding: 5px 0;
    font-weight: 700;
}

Apply changes as per needs.

Regards