Build a Theme Switcher - Build a Theme Switcher

Tell us what’s happening:

It looks like the code is working fine but I can’t pass 26 and 28.
thanks for helping

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Theme Switcher</title>
  <link rel="stylesheet" href="./styles.css">
</head>
<body>
  <button id="theme-switcher-button" aria-haspopup="true" aria-expanded="false" aria-controls="theme-dropdown">Switch Theme</button>
  <ul id="theme-dropdown" role="menu" aria-labelledby="theme-switcher-button" hidden>
    <li role="menuitem" id="theme-black">black</li>
    <li role="menuitem" id="theme-green">green</li>
  </ul>
  <div  aria-live="polite"></div>
  <script src="./script.js"></script>
</body>
</html>
/* file: styles.css */
body {
  margin: 0;
  font-family: sans-serif;
  transition: background 0.3s, color 0.3s;
}

ul {
  margin: 0;
  padding: 0;
}

li {
  list-style-type: none;
}

#status {
  text-align: center;
  min-height: 20px;
}
.green { background-color: lightgreen;}
.black {background-color: gray;}
/* file: script.js */
const themes = [{name: "black",
message: `theme is now chaged to black`},
{name: "green", message: `theme is now chaged to green`}];
const menu = document.getElementById("theme-switcher-button");
const list = document.getElementById("theme-dropdown");
const div = document.querySelector("[aria-live = 'polite']");
menu.addEventListener("click", () => {
  if(list.hidden) {
  list.hidden = false;
  menu.setAttribute("aria-expanded", "true")
  } else {
  list.hidden = true;
  menu.setAttribute("aria-expanded", "false")
  }
});
const body = document.querySelector("body")
const liEl = document.querySelectorAll("li");
liEl.forEach(li => {
  li.addEventListener("click", () => {
   themes.forEach(color => {
    if(color.name === li.id.slice(6)) {
      div.innerText = color.message;
      body.setAttribute("class", color.name)
    }
   }) 
  })
})

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36

Challenge Information:

Build a Theme Switcher - Build a Theme Switcher

GitHub Link: freeCodeCamp/curriculum/challenges/english/blocks/lab-theme-switcher/687ad7be1ff45032ccf1d92f.md at main · freeCodeCamp/freeCodeCamp · GitHub

Test #26 says:

.. the corresponding theme-<name> class should be added to the body element

Is that what you are doing here?