CSS Opacity / Transparency

• CSS – Introduction
• CSS – Basics
• CSS – Include CSS File to HTML
• CSS – ID and Class
• CSS – Cascading Order
• CSS – Selector
• CSS – Pseudo Classes
• CSS – Colors
• CSS – Gradients
• CSS – Units
• CSS – Background
• CSS – Border
• CSS – Margin and Padding
• CSS – Height and Width
• CSS – Outline
• CSS – Display and Visibility
• CSS – Position
• CSS – Overlapping Elements
• CSS – Overflow
• CSS – Float
• CSS – Clear and Clearfix
• CSS – Left and Right
• CSS – Transform
• CSS – Opacity / Transparency
• CSS – text-shadow
• CSS – box-shadow
• CSS – object-fit
• CSS – Counters
• CSS – Variables
• CSS – Fonts
• CSS – Text Formatting
• CSS – Graphics
• CSS – Links
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• CSS – Horizontal & Vertical Align
• CSS – Image Sprite
• CSS – Transitions
• CSS – 2D Transforms
• CSS – 3D Transforms
• CSS – Animations
• CSS – Media Queries
• CSS – Flexbox

Opacity / Transparency

The opacity CSS property sets the opacity of an element. Opacity is the degree to which content behind an element is hidden, and is the opposite of transparency.

The property may have one of the three values: 0 (invisible), number between(0,1), 1 (default value), 0.33

img {
   opacity: 0.33;  
}