How to center navigation menu

what theme do you use?

Tesseract

what is your site’s address? and do you have jetpack?

wwww.alexabroad.com

yes, have jetpack

I did not find “alexabroad.com”, did you mean “alex–abroad.com”?
If so paste this into your the custom css tool under appearance. (if it is not there you will need to enable it in jetpack settings)

.menu1 ul {
	margin-left: 360px;
}

If the above is not your site it probably won’t work.

I also sow alexabroad.net & alexabroad.org.
If one of these or something else is your sit tell me.