What are CSS variables?

CSS variables, also known as custom properties, are defined using the `--` prefix followed by a name and assigned a value. Here's the general syntax for defining a CSS variable:

:root {
    --variable-name: value;
}
CSS


- `:root`: The `:root` pseudo-class selects the highest-level element in the document tree, typically the `<html>` element. It's commonly used to define global CSS variables that can be accessed throughout the document.

- `--variable-name`: This is the name of the CSS variable. It must start with two dashes (`--`) followed by a name. The name can consist of letters, digits, hyphens, and underscores, but it cannot start with a digit.

- `value`: This is the value assigned to the CSS variable. It can be any valid CSS value, such as a color, size, font, or any other property value.

Here's an example of how to define CSS variables:

:root {
    --primary-color: #007bff; /* Define a CSS variable for the primary color */
    --font-size: 16px; /* Define a CSS variable for the default font size */
    --border-width: 2px; /* Define a CSS variable for the border width */
}
Python


In this example, three CSS variables are defined: `--primary-color`, `--font-size`, and `--border-width`, each with their respective values. These variables can then be used throughout the stylesheet to apply consistent styling and easily update values as needed.

Comments

Post a Comment

Write something to CodeWithAbdur!

Popular posts from this blog

Quotation marks to wrap an element in HTML

In HTML, quotation marks can be used to wrap an element, providing visual emphasis and indicating that the enclosed content represents a quotation.  This styling technique enhances the presentation of quoted text on web pages. Setting default quotation marks: To set quotation marks to wrap an element in HTML, you can use the `quotes` CSS property along with the `content` property to specify the quotation marks to be used (the below example uses the default quotes value, so it is not mentioned as can be seen). Here's how it can be achieved: /* Define the quotation marks */ .q:before { content: open-quote; } .q:after { content: close-quote; } In this CSS: - `open-quote` represents the opening quotation mark. - `close-quote` represents the closing quotation mark. Now, you can apply the `.q` class to elements where you want to set quotation marks: <p class="q">This is a quoted text.</p> This will render as: “ This is a quoted...
Read more

Making GUI Calculator in Tkinter Python

from tkinter import * abdur = Tk () abdur . geometry ( "480x600" ) abdur . minsize ( 480 , 600 ) abdur . maxsize ( 480 , 600 ) abdur . wm_iconbitmap ( "calc.ico" ) abdur . title ( "Calculator - Made by AbdurCodes" ) def calc ( event ):     global entry_val     btext = event .widget.cget( "text" )         try :         if btext == "=" :             if entry_val . get (). isdigit ():                 value = int ( entry_val . get ())             else :                 value = eval ( screen . get ())                             entry_val . set ( value )             screen . update ()                             ...
Read more

Unlocking Web Design: A Guide to Mastering CSS Layout Modes

In CSS, layout modes define how various elements are positioned and arranged on the webpage. Several different layout modes exist, each with its own strengths and weaknesses. Here's a breakdown of the most common ones: 1. Normal Flow: This is the default layout mode for all elements. Elements stack vertically, one after the other, based on the document's flow. Block elements (like paragraphs and headings) occupy the full width of their container, while inline elements (like text and images) flow along the same line. Offers control over element sizes and margins but can be inflexible for complex layouts. 2. Floats: Allows elements to "float" to the left or right of the text flow. Useful for creating sidebars, wrapping text around images, or other basic layout adjustments. Can be tricky to manage and lead to overlapping content or layout instability. 3. Positioning: Offers precise control over the position of elements on the page. You can specify exact coordinates...
Read more