Build a Stylized To-Do list help

Hi. I am completely stuck on step “14. The links on the page should have no underline by default”. I keep getting an error for this even though I think my html and css code is fine. Help appreciated

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Styled To-Do List</title>
</head>
<body>
<ul class="todo-list">

    <li>
    <input type="checkbox" id="iphone">
    <label for="iphone">
        Explore iphone</label>
            <ul class="sub-item">
            <li><a class="sub-item-link" href="https://www.apple.com" target="_blank">iphone 16 pro max</a></li>
            </ul>


    <li>
    <input type="checkbox" id="report">
    <label for="report">
        Explore reports</label>
            <ul class="sub-item">
            <li><a class="sub-item-link" href="https://www.reports.com" target="_blank">Account reports</a></li>
            </ul>

    <li>
    <input type="checkbox" id="keyboard">
    <label for="keyboard">
        Explore gaming keyboards</label>
        <ul class="sub-item">
            <li><a class="sub-item-link" href="https://www.dell.com" target="_blank">Dell Keyboard</a></li>
            </ul>

    <li>
    <input type="checkbox" id="ring">
    <label for="ring">
        Explore rings</label>
        <ul class="sub-item">
            <li><a class="sub-item-link" href="https://www.goldrings.com" target="_blank">Gold rings</a></li>
            </ul>

</ul>

</body>

</html>

CSS

a {text-decoration: none;
}

I’ve edited your post to improve the readability of the code. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').

are you connecting the css file to your html?

I feel stupid. This worked perfectly. Thank you very much