What is the CSS property used to control the visibility of an element?Optionsdisplayhiddenopacityvisibility

Which CSS property is used to set the opacity of an element?Optionstransparencyopacityvisibilityfilter

How can you make an element invisible but still take up space in the layout using CSS?Optionsvisibility: hidden;opacity: 0;position: absolute;display: none;

What is the CSS property used to create shadows behind elements?Optionsshadow-effectelement-shadowtext-shadowbox-shadow

Which CSS selector selects the first element that is hidden or invisible?Question 9Answera.:hiddenb.:visiblec.:display-noned.:not-visible

Which CSS property is used to control the appearance of an element when it is hovered over by the mouse pointer?Optionshover-effecton-hoveractive:hover