Hello ,
1. I don’t get it what you mean. You can remove your drop down items from your custom menus directly. You can go to “Appearance => Menus” and edit your custom menu items.
But if you just want to hide the drop down of the menu then you can add the following css in “Appearance => Theme Options => Custom CSS” box:
#access ul li ul {
display: none !important;
}
But if you totally want to hide your menu, then add the following css instead:
#access {
display: none;
}
2. The layout narrow in not from the css that you have added but it’s from the layout option that you have select. So, please go to “Appearance => Theme Options => Layout Options” and check your “Default Layout”, it should be set to “Left Sidebar” or if you don’t want sidebar then it should be set to “No Sidebar, Full Width”