rss  This XML file does not appear to have any style information associated with it. The document tree is shown below.的解决方法

<?xml version="1.0" ?>
<?xml-stylesheet type="text/css" href="http://you.com/rss.css" ?>
...

css的配置

rss {
display: block;
font-family: verdana, arial;
}
title {
display: block;
margin: 5px;
padding: 2px;
color: gray;
border-bottom: 1px solid silver;
}
link {
display: block;
font-size: small;
padding-left: 10px;
}
item {
display: block;
padding: 2px 30px 2px 30px;
}
docs {
display: block;
background-color: #ffffe6;
margin: 20px;
text-align: center;
padding: 5px;
color: #7f7f7f;
border: 1px solid silver;
}
/* all hidden elements */
language, lastBuildDate, ttl, guid, category, description, pubDate {
display: none;
}