Hello,
Add the below code to Theme Options > Custom CSS
div.mobile-menu-content .et_b_header-menu .menu li > .nav-sublist-dropdown:not(.nav-sublist), div.mobile-menu-content .et_b_header-menu .menu li > ul:not(.nav-sublist-dropdown):not(.nav-sublist), div.mobile-menu-content .et_b_header-menu .menu li > .nav-sublist > ul { padding: 0 !important; border-left: none; }
Regards
