An element's opacity can be set using the opacity property. Values can be anywhere from 0.0 (transparent) to 1.0 (opaque).
Example Usage
<div style="opacity:0.8;">
This is a partially transparent element
</div>
| Property Value | Transparency |
|---|---|
opacity: 1.0; | Opaque |
opacity: 0.75; | 25% transparent (75% Opaque) |
opacity: 0.5; | 50% transparent (50% Opaque) |
opacity: 0.25; | 75% transparent (25% Opaque) |
opacity: 0.0; | Transparent |