Inverted filling of polygon in QGIS - Geographic Information Systems Stack Exchange

Is there a way to color on the outside of polygons like this? I have tried to use the inverted polygon style in QGIS but it didn't work.

DOC) Geographic Information Systems for Archaeologists: QGIS Training Manual (May 2019)

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Working with Reality Model Classifiers

QGIS 2.14 QGISTrainingManual en, PDF, Geographic Information System

QGIS Quick Tip - Inverted Polygons and Shapeburst Fill

QGIS Plugins planet

DHIS 2 End User guide

Open Source – GIS

1. Acknowledgments — GMT 5.3.2 documentation