Is it possible to reference a plain text file as a CSS file within HTML? I have no control over the name or extension of the external CSS file. Take the following as an example:
I have a file called index.html with the following code between the <head> tags:
<head>
<title>Website</title>
<link rel="stylesheet" href="https://example.com/styles">
</head>
The external file at example.com/styles looks like this:
body {
color: red;
font-family: sans-serif;
background: blue;
}
If I open index.html I get the following error in my browser's terminal:
The stylesheet https://example.com/styles was not loaded because its MIME type, “text/plain”, is not “text/css”.
Even if I specify the MIME type with type="text/plain" when referencing the styles file, I still get the same error.
Again, I don't have any control over what the styles file is called, or what it's extension is. All I know is it's URL. Obviously this issue could be mitigated by having a web server download the styles file and then give the local copy a .css extension, but for this project I don't have access to a back-end server.
The following achieves what you intend, but is arguably bad practice. It requests the resource and then inserts it in the style tag, bypassing the MIME check by the browser. I would suggest getting the CSS and serving it with correct Content-Type.
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>CSS From Text File</title>
<style id="style"></style>
</head>
<body>
<div id="styled"></div>
</body>
<script>
const style = document.getElementById('style');
const req = new XMLHttpRequest();
req.onloadend = () => {
style.innerHTML = req.responseText;
};
req.open("GET", "style.txt");
req.send();
</script>
</html>
style.txt
#styled {
height: 100px;
width: 100px;
background: red;
}