What should we do here

HTML-CSS
1

what should we do here please say

Screenshot (695)
Screenshot (695)1920×1080 215 KB

Your code so far


<style>
:root {
  --red-color: red;
}
.red-box {
  background: var(--red-color,);
  height: 200px;
  width:200px;
}


</style>
<div class="black-box"></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36.

Challenge: Improve Compatibility with Browser Fallbacks

Link to the challenge:

2

the figure disappeared because there is no more an element with class red-box, please reset your code

the thing to do here is to add a background declaration to make the element red, even when the browser don’t know how to use variables, so you need to add a background declaration to make it red that doesn’t use a variable

3