/* Make the main menu horizontal */
.container-banner ul.mod-menu.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center; /* This will center the menu items */
  padding-left: 0;
}

/* Add some space between the menu items */
.container-banner ul.mod-menu.nav > li.nav-item {
  margin: 0 15px;
}