When you are first building a website, you may find that it is only one page in size and rather short, and using a navbar doesn’t really serve any intuitive purpose. Fortunately, you can easily remove your site’s navbar until you wish to use it later with the Big Themes.
All you have to do to remove the navbar and the menu button is add the following code to the Additional CSS section:
#site-navigation {
display: none;
}Once you have done this, you can adjust the body of the page to the top of the screen in the Layout section of the customizer. If at any point in the future you decide to make your site larger, you can add the navbar back by removing the above code from the navbar. You also have the option of adding a navigation block directly into the body of your page.
This technique should work with any of the Big Themes.