Help me out...stucked here

HTML-CSS
1

Tell us what’s happening:

Your code so far


<style>
  :root {
  --red-color: red;
}
.red-box {
  background: var(--red-color);
  width: 100px;
  height: 100px;
}
.red-box {
  background: var(--red-color);
  width: 150px;
  height: 200px;
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36.

Challenge: Improve Compatibility with Browser Fallbacks

Link to the challenge:

2

Welcome!

For future posts, please fill in the Tell us what’s happening section. If you do not ask a question, we cannot answer one.

From the code you have, I can see you have deleted necessary code. Please hit the reset button on the challenge, and start again.

3

thank you for the reply. i have got the solution myself. thank you very much for offering a help