CSS Variables







googletag.cmd.push(function() { googletag.display('div-gpt-ad-1422003450156-2'); });



CSS Variables



❮ Previous
Next ❯


CSS Custom Properties (Variables)


The var() function can be used to insert the value of a custom property.



Browser Support


The numbers in the table specify the first browser version that fully supports the property.




















Function
var() 49.0 15.0 31.0 9.1 36.0



The var() Function


Variables in CSS should be declared within a CSS selector that defines its scope. For a global scope you can use
either the :root or the body selector.


The variable name must begin with two dashes (--) and is case sensitive!


The syntax of the var() function is as follows:




var(custom-name, value)
















Value Description
custom-name Required. The custom property's name (must start with two
dashes)
value Optional. The fallback value (used if the custom property is invalid)

The following example first defines a global custom property named "--main-bg-color",
then it uses the var() function to insert the value of the custom property later
in the style sheet:




Example



:root {
    --main-bg-color: coral;
}

#div1 {
   
background-color: var(--main-bg-color);
}

#div2 {
   
background-color: var(--main-bg-color);
}

Try it Yourself »



The following example uses the var() function to insert several custom
property values:



Example



:root {
    --main-bg-color: coral;
   
--main-txt-color: blue;
    --main-padding: 15px;
}

#div1 {
    background-color: var(--main-bg-color);
   
color: var(--main-txt-color);
    padding: var(--main-padding);
}

#div2 {
    background-color: var(--main-bg-color);
   
color: var(--main-txt-color);
    padding: var(--main-padding);
}

Try it Yourself »


CSS var() Function











Property Description
var() Inserts the value of a custom property



❮ Previous
Next ❯

-

Popular posts from this blog

HTML5 Browser Support

<!-- main_leaderboard, all: [728,90][970,90][320,50][468,60] --> HTML5 Browser Support ❮ Previous Next ❯ You can teach older browsers to handle HTML5 correctly. HTML5 Browser Support HTML5 is supported in all modern browsers. In addition, all browsers, old and new, automatically handle unrecognized elements as inline elements. Because of this, you can "teach" older browsers to handle "unknown" HTML elements. You can even teach IE6 (Windows XP 2001) how to handle unknown HTML elements. Define Semantic Elements as Block Elements HTML5 defines eight new semantic elements. All these are block-level elements. To secure correct behavior in older browsers, you can set the CSS display property for these HTML elements to block : header, section, footer, aside, nav, main, article, figure {     display: block; } Add New Elements to HTML You can also add new elements to an HTML page with a browser trick. This example adds a ne...
Read more

CSS Box Sizing

<!-- main_leaderboard, all: [728,90][970,90][320,50][468,60] --> CSS Box Sizing ❮ Previous Next ❯ CSS Box Sizing The CSS box-sizing property allows us to include the padding and border in an element's total width and height. Without the CSS box-sizing Property By default, the width and height of an element is calculated like this: width + padding + border = actual width of an element height + padding + border = actual height of an element This means: When you set the width/height of an element, the element often appear bigger than you have set (because the element's border and padding are added to the element's specified width/height). The following illustration shows two <div> elements with the same specified width and height: This div is smaller (width is 300px and height is 100px). This div is bigger (width is also 300px and height is 100px). The two <div> elements above end up with different sizes in the re...
Read more

SVG Filters

<!-- main_leaderboard, all: [728,90][970,90][320,50][468,60] --> SVG Filters ❮ Previous Next ❯ SVG Filters SVG Filters are used to add special effects to SVG graphics. Browser Support The numbers in the table specify the first browser version that supports SVG filters.   SVG Filters 8.0 10.0 3.0 6.0 9.6 SVG Filter Elements In the next chapters, we will only demonstrate a touch of the filter effects that are possible - and give you an idea of what can be done with SVG. The available filter elements in SVG are: <feBlend> - filter for combining images <feColorMatrix> - filter for color transforms <feComponentTransfer> <feComposite> <feConvolveMatrix> <feDiffuseLighting> <feDisplacementMap> <feFlood> <feGaussianBlur> <feImage> <feMerge> <feMorphology> <feOffset> - filter for drop sh...
Read more