CSS/HTML本地运行正常，在JSFiddle/CodePen失效，请求技术协助

Hey there! I took a look at your code and spotted the main issue right away—let's break it down:

The Root Problem #

In your HTML <head> section, you're referencing a local CSS file:

<link rel="stylesheet" href="css/stilovi.css">

When you run this code locally, your project folder has a css directory with stilovi.css inside, so the browser can find and load the styles perfectly. But on platforms like JSFiddle or CodePen, this file doesn't exist in their server structure—there's no css/stilovi.css path available to them. That means all your custom styling isn't being applied, which makes the page look broken compared to your local setup.

How to Fix It #

You have two simple solutions to get this working on online code platforms:

• Option 1: Move your CSS code directly to the platform's CSS panel
  Copy all the content from your local stilovi.css file and paste it into the CSS section of JSFiddle/CodePen (instead of keeping the external link). This way, the styles are embedded directly in the demo and will load correctly.

• Option 2: Host your CSS file publicly and update the link
  If you want to keep using an external CSS file, upload stilovi.css to a public hosting service (like GitHub Gist, a free CDN, or your own web server). Then replace the local path with the full public URL of the file. For example:

  <link rel="stylesheet" href="https://your-public-url.com/stilovi.css">
  

Quick Check #

Once you make either of these changes, your demo should render exactly like it does on your local machine—all the styling for the header, navigation, sections, and images will apply as intended.

内容的提问来源于stack exchange，提问作者visualcurse