Improve Compatibility with Browser Fallbacks test

HTML-CSS
1

I try several times but am still getting errors, whats the problem please i need help:

Your code so far


<style>
:root {
–red-color: red;
}
.red-box {
background: red;
background: var(–red-color);
height: 200px;
width:200px;
}
</style>
<div class=“red-box”></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/responsive-web-design/basic-css/improve-compatibility-with-browser-fallbacks

2

background: var(–red-color);
You modified this line and it now contains an error.

3

This as well, same error (reset the code to see what is wrong).

:root {
–red-color: red;
}
4

Thank you all for the help.