Build a Stylized To-Do List - Build a Stylized To-Do list

HTML-CSS
1

Tell us what’s happening:

Can’t figure out why 10 and 11 are full-filled, can’t see where the typo or syntax error is first time posting any help would be apricated. Thanks

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <title>Styled To-Do List</title>
    <link rel="stylesheet" href="styles.css">
</head>

<body>
<ul class="todo-list"> 
 
  <li><input id="item 1" type="checkbox" name="item 1" value="item 1"</input>
      <label for="item 1">Item 1</label></li>
      <ul sub-item>
         <li> <a class="sub-item-link" href="https://www.youtube.com/" target="_blank">Item 1A</a></li>
      </ul>   
       
  <li><input id="item 1" type="checkbox" name="item 1" value="item 1"</input>
      <label for="item 1">Item 1</label></li>
      <ul sub-item>
         <li> <a class="sub-item-link" href="https://www.youtube.com/" target="_blank">Item 1A</a></li>
      </ul>
    
    <li><input id="item 1" type="checkbox" name="item 1" value="item 1"</input>
      <label for="item 1">Item 1</label></li>
      <ul sub-item>
         <li> <a class="sub-item-link" href="https://www.youtube.com/" target="_blank">Item 1A</a></li>
      </ul>

    <li><input id="item 1" type="checkbox" name="item 1" value="item 1"</input>
      <label for="item 1">Item 1</label></li>
      <ul sub-item>
         <li> <a class="sub-item-link" href="https://www.youtube.com/" target="_blank">Item 1A</a></li>
      </ul>          
        
  </li>   
</ul>    

</body>

</html>

/* file: styles.css */
a:focus {
  color: green;
}
a:visted {
color: red;
}
a:hover {
  color: yellow; 
}
a:visted{
  color: brown;
}
a {
text-decoration: none;
}
.sub-item-link{
  color:purple;
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0

Challenge Information:

Build a Stylized To-Do List - Build a Stylized To-Do list

2

please use an html validator like this one: Ready to check - Nu Html Checker

there are various issues, like closing tags for input do not exist

also you need to review what goes inside the li element, like

is the unordered list inside the li like asked?