Re: Broken stylesheet?
1and1 does not like zen cart for some reason. I had a zen cart site hosted with then until they on their own decided it needed updated and shut down my database.
Now for your problem. They or someone has renamed everyone of you style sheets with an htm extention and placed inside everyone of those style sheet this code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Error 500 - Internal server error</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="cache-control" content="no-cache" />
</head>
<body style="font-family:arial;">
<h1 style="color:#0a328c;font-size:1.0em;">Error 500 - Internal server error</h1>
<p style="font-size:0.8em;">An internal server error has occured!<br/>Please try again later.</p>
</body>
</html>
I hope you have backups to upload and in the meanwhile try to find a zen cart friendly host.
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Play with it long enough and you will break it.