Which property would you use to completely hide an element while keeping its space on the page?

The property "visibility: hidden;" is used to hide an element while still maintaining its layout space on the page. When this property is applied, the element becomes invisible to the viewer, but it continues to occupy the same area in the document flow as before. This means that other elements on the page will not shift to fill the space left by the hidden element, preserving the overall layout.

In contrast, "display: none;" removes the element entirely from the document flow, causing adjacent elements to move into the space it occupied. The "opacity: 0;" property makes the element fully transparent, but it remains interactive and occupies space on the page, unlike "visibility: hidden;". Lastly, "float: none;" affects how elements interact with floating behavior and does not inherently hide elements or affect their visibility directly.