Tell us what’s happening:
I added what i think would be the immediate fall back which is background: red;
Your code so far
<style>
:root {
--red-color:red;
}
.red-box {
background: red;
background-color: red;
background: var(--red-color,red);
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/71.0.3578.80 Safari/537.36
.
Link to the challenge:
https://learn.freecodecamp.org/responsive-web-design/basic-css/improve-compatibility-with-browser-fallbacks/