You can set the menu font and align in the WP Customizer, but they are not in the “Default Theme Styles” block.
If by default you mean that you want to install the theme and see the changes without using the customizer, your best choice will be copying the CSS styles that the customizer applies and pasting them at the end of the styles.css file inside your .zip exported file.
Hi it works with WordPress Customizer but I would like to have the center navigation as default. I copied style.css from theme editor/css/style.css to my local forder css/style.css but it doesn’t work. I would like to hear from you soon. Thanks!