CODEWITHSUNDEEP
cssmicrosoft-edgecss-variables
viggo
viggo

Reputation: 536

Do CSS variables work differently in Microsoft Edge?

I am developing a web site and have optimized it for Firefox and Chrome. The project contains a style sheet called base.css which is included in all the pages, and which contains some global settings and definitions, including a list of variables which I use to store color values like such:

:root {
    --yellow-1: #fff8e3;
    --yellow-2: #ffe9a9;
}

and so on, and calling them like for example:

.a-class {
    background-color: var(--yellow-2);
}

When I look at the page in Edge, all the colors are missing, and when I use the DOM explorer, it marks all uses of the variables with red underlines. Does Edge not support CSS variables in this way? What can I do to work around this?

Upvotes: 4

Views: 5017

Answers (3)

agiopnl
agiopnl

Reputation: 1344

I tried isolating the problem, and it seems there were no problem with this in Edge. Normal CSS works works as supposed to.

When selecting browser prefix elements like:

::-ms-track
::-ms-fill-lower
::-ms-fill-upper
::-ms-thumb

Variables does not work on theese.

Upvotes: -1

user2660781
user2660781

Reputation: 29

I had the same problem, but I defined variables with opacity. In Chrome it worked fine, but in edge it didn't. After I removed opacity from declarations, it worked fine in Edge as well.

Upvotes: 1

Alex
Alex

Reputation: 2780

MS Edge does support CSS variables from EdgeHTML v15:

https://blogs.windows.com/msedgedev/2017/03/24/css-custom-properties/

This is also backed up here:

https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_variables#Browser_compatibility

The syntax is as follows:

Declaring a variable:

element {
  --main-bg-color: brown;
}

Using the variable:

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

Upvotes: 4

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