Visibility & Opacity

Display Toggling

Inline now

Block now

Hidden!

Also hidden!

Promo Banner (disappeared!)

Visibility Property

Hidden (space kept)

Still visible

Opacity Levels

60%

40%

15%

0%

Z-Index Stacking (reversed)

z-index: 3 (Blue on top)

z-index: 2 (Red)

z-index: 1 (Green behind)

Overflow (visible — content spills out)

This content is intentionally long to demonstrate overflow behavior. When overflow is visible, the extra content below this line WILL be visible. This line now shows! And this one too. Overflowing content here.

Visibility & Opacity — After

Display Toggling

Promo Banner (disappeared!)

Visibility Property

Opacity Levels

Z-Index Stacking (reversed)

Overflow (visible — content spills out)