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Course Content
CSS Basic
0/1
What is CSS?
00:00
Ways To Add CSS
0/4
Introduction
00:00
Inline CSS
00:00
Internal CSS
00:00
External CSS
00:00
CSS Colors
0/6
Named Colors
00:00
Hexadecimal Colors
00:00
RGB Colors
00:00
RGBA Colors
00:00
HSL Colors
00:00
HSLA Colors
00:00
CSS Selectors
0/1
Introduction
CSS Comments
0/1
Introduction
CSS Text Formatting
0/1
Various types of Text Formatting
00:00
CSS Backgrounds
0/1
Introduction
00:00
CSS Borders
0/1
Introduction
CSS Outline
0/1
Introduction
00:00
CSS Fonts
0/1
Font Family
00:00
CSS Height and Width
0/1
Introduction
00:00
CSS Margins and Paddings
0/2
CSS Margin
00:00
CSS Padding
00:00
CSS Box Models
0/1
What is CSS Box Model?
00:00
CSS Align
0/5
Text Alignment (text-align)
00:00
Horizontal Centering (margin and auto)
00:00
Vertical Alignment
00:00
Grid Centering
00:00
Table Cell Alignment (vertical-align for table cells)
00:00
CSS Icons
0/1
Introduction
00:00
CSS Links
0/1
Introduction
00:00
CSS Lists
0/1
Introduction
00:00
CSS Tables
0/1
Introduction
00:00
CSS Gradient
0/4
How to use CSS Gradients and its Types
00:00
Linear Gradients
00:00
Radial Gradients
00:00
Conic Gradients
00:00
CSS Display Properties
0/1
Introduction
00:00
CSS Max-Width Property
0/1
Introduction
00:00
CSS Positioning Elements
0/1
Introduction
00:00
CSS Z-Index Property
0/1
Introduction
00:00
CSS Overflow
0/1
Introduction
00:00
CSS Float
0/1
Introduction
00:00
CSS Opacity
0/1
Introduction
00:00
CSS Pseudo-classes
0/1
Various Types of Pseudo-classes
00:00
CSS Pseudo-Elements
0/1
Various Types of Pseudo-Elements
00:00
CSS Forms
0/1
Introduction
00:00
CSS Flexbox
0/3
Introduction
00:00
Container Properties
00:00
Item Properties
00:00
CSS Nav
0/2
How to create Vertical Navbar using CSS?
00:00
How to create Horizontal Navbar using CSS?
00:00
CSS Dropdowns
0/1
Dropdown Creation
00:00
CSS Buttons
0/1
Introduction
00:00
CSS Cards
0/1
How to create Cards using CSS?
00:00
CSS Image Gallery
0/1
How create an image Gallery using css?
00:00
CSS Media Queries
0/1
Introduction
00:00
CSS Variables
0/1
What is CSS Variables
00:00
CSS 2D Transforms
0/1
Various types of 2D Transforms
00:00
CSS 3D Transforms
0/1
Various types of 3D Transforms
00:00
CSS Transition
0/1
Types of CSS Transition
00:00
CSS Animation
0/8
What are CSS Animations
00:00
The @keyframes Rule
00:00
Animation Duration
00:00
Animation Delay
00:00
Animation Iteration Count
00:00
Animation Direction
00:00
Animation Timing Function
00:00
Animation Shorthand property
00:00
CSS Grid Layout
0/3
CSS Layout
00:00
Grid Container
00:00
Grid Item
00:00
CSS
About Lesson

The opacity property in CSS is used to set the transparency of an element, making it partially or fully transparent. The value of opacity is a number between 0 (completely transparent) and 1 (completely opaque).

Syntax:

selector {
opacity: value;
}

Example:

<!DOCTYPE html>
<html lang=”en”>
<head>
    <meta charset=”UTF-8″>
    <meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
    <style>
        .transparent-box {
            width: 200px;
            height: 200px;
            background-color: #3498db;
            opacity: 0.5;
            /* Set opacity to 50% */
        }
        .opaque-box {
            width: 200px;
            height: 200px;
            background-color: #e74c3c;
            opacity: 1;
            /* Set opacity to 100% (fully opaque) */
        }
        img {
            height: 200px;
            background-color: #3498db;
            opacity: 0.4;
        }
    </style>
    <title>CSS Opacity Example</title>
</head>
<body>
    <div class=”transparent-box”>
        This is a transparent box.
    </div>
    <br>
    <img src=”R.jpeg” />
    <br>
    <div class=”opaque-box”>
        This is an opaque box.
    </div>
</body>
</html>

Output:

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