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    criticalcss.com default viewport size is 1400x1080 pixels (width x height). You can change this size by typing a desired width and height values above. Allowed value ranges are from 800 to 4096 for width and from 600 to 2160 for height.', 'autoptimize' ); ?>

    .button-special,//#footer. In this example .button-special will match .button-special selector only, while //#footer will match #footer, #footer-address and #footer-phone selectors in case they exist.
    Do take into account that changing this setting will only affect new/ updated rules, so you might want to remove old rules and clear your page cache to expedite the forceIncludes becoming used.', 'autoptimize' ); ?>

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    CAUTION! Only use debug mode on production/live environments for ad-hoc troubleshooting and remember to turn it back off after, as this generates a lot of log-data.
    Check the box above to enable Autoptimize CriticalCSS Power-Up debug mode. It provides debug facilities in this screen, to the browser console and to this file: ', 'autoptimize' ); echo '' . AO_CCSS_LOG . ''; ?>