Mai Lifestyle Pro

Go to Appearance > Customize > Additional CSS and enter the following:

.mega-menu-header-right .mai-toggle {
    display: none;
}
.mega-menu-header-right .header-right {
    display: block;
}

.mega-menu-header-right .mai-toggle {

display: none;

}

.mega-menu-header-right .header-right {

display: block;

}

Then go to Mega Menu > Menu Themes > Mobile Menu and apply the following settings:

Sub Menu – Force Width: On
Sub Menu – Overlay Content: On
Disable Mobile Toggle: Off

Max Mega Menu Documentation