channel link, channel language, channel copyright, channel managingEditor, channel webMaster, channel docs, channel lastBuildDate {
   display:none;
}
rss {
   font-family:Verdana, Arial, Helvetica, sans-serif;
   font-size:0.7em;
   line-height:130%;
   margin:1em;
}
<em>/* HEADER */</em>
<em>/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/</em>
channel title {
   display:block;
   padding:0.4em 0.2em;
   color:#FFF;
   border-bottom:1px solid black;
   font-weight:bold;
   font-size:140%;
   background-color:#4483C7;
}
channel description {
   display:block;
   float:left;
   font-size:130%;
   font-weight:bold;
   margin:0.5em;
}
<em>/* CONTENT */</em>
<em>/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/</em>
channel item {
   background-color:#FFFFEE;
   border:1px solid #538620;
   clear:both;
   display:block;
   padding:0 0 0.5em;
   margin:1em;
}
channel item title {
   background-color:#538620;
   border-bottom-width:0;
   color:#FFF;
   display:block;
   font-size:110%;
   font-weight:bold;
   margin:0;
   padding:0.3em 0.5em;
}
channel item description {
   display: block;
   float:none;
   margin:0;
   text-align: left;
   padding:0.2em 0.5em 0.4em;
   color: black;
   font-size:100%;
   font-weight:normal;
}
channel item link {
   color:#666;
   display:block;
   font-size:86%;
   padding:0 0.5em;
}
channel item pubDate {
   color:#666;
   display:block;
   font-size:86%;
   padding:0 0.5em;
}