I got stucked here kekeke
Your code so far
<style>
:root {
--red-color: red;
}
.red-box {
background: var(--red-color,white);
height: 200px;
width:200px;
}
</style>
<div class="red-box"></div>
Your browser information:
Your .red-box rule should include a fallback with the background set to red immediately before the existing background declaration.