It looks like you're creating an HTML page to display a music chart, and you've started styling the list items with CSS. However, there's a small issue in your CSS that needs to be corrected. Specifically, the `counter-reset` property should be set on the parent element (the `<ol>`), not on each `<li>`. Also, the `counter-increment` property should be used on the `<li>` elements to increment the counter. Here’s the corrected version of your code: ```html <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>音乐榜单</title> <style> ol { list-style-type: none; counter-reset: mycounter; padding-left: 0; } ol li { position: relative; padding-left: 30px; } ol li::before { content: counter(mycounter); counter-increment: mycounter; position: absolute; left: 0; width: 15px; height: 15px; background-color: #f0f0f0; /* Optional: Add a background color for the number */ text-align: center; line-height: 15px; /* Center the number vertically */ border-radius: 50%; /* Optional: Make the number circle-shaped */ } </style> </head> <body> <h1>音乐榜单</h1> <ol> <li>歌曲1 - 歌手1</li> <li>歌曲2 - 歌手2</li> <li>歌曲3 - 歌手3</li> <li>歌曲4 - 歌手4</li> <li>歌曲5 - 歌手5</li> </ol> </body> </html> ``` Explanation: 1. Counter Reset: The `counter-reset: mycounter;` is set on the `<ol>` element to initialize the counter. 2. Counter Increment: The `counter-increment: mycounter;` is set on the `<li>` elements to increment the counter for each list item. 3. Styling the Counter: The `::before` pseudo-element is used to style the counter. It is positioned absolutely within the relatively positioned `<li>` element, and its content is set to the current value of the counter using `content: counter(mycounter);`. This will create a custom-styled ordered list where each list item is prefixed with a number, styled as a circle with a background color. Adjust the styles as needed to fit your design preferences. [2024-10-24 18:23:33 | AI写代码神器 | 580点数解答]