- CSS Tutorial
- CSS - Home
- CSS - Introduction
- CSS - Syntax
- CSS - Selectors
- CSS - Inclusion
- CSS - Measurement Units
- CSS - Colors
- CSS - Backgrounds
- CSS - Fonts
- CSS - Text
- CSS - Images
- CSS - Links
- CSS - Tables
- CSS - Borders
- CSS - Border Block
- CSS - Border Inline
- CSS - Margins
- CSS - Lists
- CSS - Padding
- CSS - Cursor
- CSS - Outlines
- CSS - Dimension
- CSS - Scrollbars
- CSS - Inline Block
- CSS - Dropdowns
- CSS - Visibility
- CSS - Overflow
- CSS - Clearfix
- CSS - Float
- CSS - Arrows
- CSS - Resize
- CSS - Quotes
- CSS - Order
- CSS - Position
- CSS - Hyphens
- CSS - Hover
- CSS - Display
- CSS - Focus
- CSS - Zoom
- CSS - Translate
- CSS - Height
- CSS - Hyphenate Character
- CSS - Width
- CSS - Opacity
- CSS - Z-Index
- CSS - Bottom
- CSS - Navbar
- CSS - Overlay
- CSS - Forms
- CSS - Align
- CSS - Icons
- CSS - Image Gallery
- CSS - Comments
- CSS - Loaders
- CSS - Attr Selectors
- CSS - Combinators
- CSS - Root
- CSS - Box Model
- CSS - Counters
- CSS - Clip
- CSS - Writing Mode
- CSS - Unicode-bidi
- CSS - min-content
- CSS - All
- CSS - Inset
- CSS - Isolation
- CSS - Overscroll
- CSS - Justify Items
- CSS - Justify Self
- CSS - Tab Size
- CSS - Pointer Events
- CSS - Place Content
- CSS - Place Items
- CSS - Place Self
- CSS - Max Block Size
- CSS - Min Block Size
- CSS - Mix Blend Mode
- CSS - Max Inline Size
- CSS - Min Inline Size
- CSS - Offset
- CSS - Accent Color
- CSS - User Select
- CSS Advanced
- CSS - Grid
- CSS - Grid Layout
- CSS - Flexbox
- CSS - Visibility
- CSS - Positioning
- CSS - Layers
- CSS - Pseudo Classes
- CSS - Pseudo Elements
- CSS - @ Rules
- CSS - Text Effects
- CSS - Paged Media
- CSS - Printing
- CSS - Layouts
- CSS - Validations
- CSS - Image Sprites
- CSS - Important
- CSS - Data Types
- CSS3 Tutorial
- CSS3 - Tutorial
- CSS - Rounded Corner
- CSS - Border Images
- CSS - Multi Background
- CSS - Color
- CSS - Gradients
- CSS - Box Shadow
- CSS - Box Decoration Break
- CSS - Caret Color
- CSS - Text Shadow
- CSS - Text
- CSS - 2d transform
- CSS - 3d transform
- CSS - Transition
- CSS - Animation
- CSS - Multi columns
- CSS - Box Sizing
- CSS - Tooltips
- CSS - Buttons
- CSS - Pagination
- CSS - Variables
- CSS - Media Queries
- CSS - Functions
- CSS - Math Functions
- CSS - Masking
- CSS - Shapes
- CSS - Style Images
- CSS - Specificity
- CSS - Custom Properties
- CSS Responsive
- CSS RWD - Introduction
- CSS RWD - Viewport
- CSS RWD - Grid View
- CSS RWD - Media Queries
- CSS RWD - Images
- CSS RWD - Videos
- CSS RWD - Frameworks
- CSS References
- CSS - Questions and Answers
- CSS - Quick Guide
- CSS - References
- CSS - Color References
- CSS - Web browser References
- CSS - Web safe fonts
- CSS - Units
- CSS - Animation
- CSS Resources
- CSS - Useful Resources
- CSS - Discussion
CSS Data Type - <alpha-value>
CSS <alpha-value> data type determines the transparency or alpha channel of a color. It can be a <number> (between 0 and 1) or a <percentage> (between 0% and 100%).
Possible Values
<number> − It represents a decimal number between 0 (fully transparent) to 1. 0 (fully opaque).
<percentage> − It represents a percentage between 0% (fully transparent) and 100% (fully opaque).
Syntax
<alpha-value> = number | percentage;
CSS <alpha-value> - Text Color Opacity
The following example demonstrates different heading elements using the rgba() function with both number and percentage values, in order to check the opacity of the text color. In the following example −
- rgba(255, 0, 0, 0.6) represents the color with RGB components (255, 0, 0) and the fourth value (0.6) represents the alpha channel or opacity.
- rgba(109, 101, 233, 70%) represents the color with RGB components (109, 101, 233) and an alpha channel of 70%, indicating the opacity.
<html> <head> <style> h3 { color: rgba(255, 0, 0, 0.6); } h4 { color: rgba(109 101 233 / 70%); } </style> </head> <body> <h3>Text color opacity with number value.</h3> <h4>Text color opacity with percentage value.</h4> </body> </html>
CSS <alpha-value> - shape-image-threshold Property
The following example demonstrates the use of shape-image-threshold property, that sets the alpha channel threshold to determine a shape of an image −
<html> <head> <style> .img-container { width: 400px; height: 200px; background-image: url("images/pink-flower.jpg"); color: yellow; shape-image-threshold: 0.8; } </style> </head> <body> <div class="img-container"> <h1>This text will wrap around the shape of the image.</h1> </div> </body> </html>
Advertisements
To Continue Learning Please Login
Login with Google