{display:table; width:auto; margin:0px auto; float:none;}
This works in most cases, but not essential that it will work for you. Try and check.
]]> If you are using WordPress 4.7 or later, use the “Additional CSS” option in the customizer.
If your theme has a custom CSS option, use that to add the CSS shown above.
If not, install the plugin Simple Custom CSS.
Learn to use the Chrome Developer Tools to help you see and test changes to your CSS.
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