@media (max-width: 601px) {
.navbar-header {
display: inline-block;
}

#mega-menu-wrap-main_menu {
width: calc(100% - 206px);
float: right;
background-color: transparent;
}

#mega-menu-wrap-main_menu .mega-menu-toggle {
background-color: transparent;
}
.mega-toggle-block::after {
content: "" !important;
}
}


Şöyle birşey yaptım dene istersen :)