Answer
display:none and visibility:hidden hide content differently. • display:none prevents the element from generating boxes. • visibility:hidden keeps the box in layout but does not paint it. • Both normally remove the hidden content from accessibility interaction.
💡 Simple Example
.removed { display: none; }
.reserved-space { visibility: hidden; }
⚡ Quick Revision
display:none removes boxes; visibility:hidden preserves their layout space.