<stylesheet src="css/stockwatcher.css"/>

body {
  padding: 10px;
}
.watchListHeader {
  background-color: #2062b8;
  color: white;
  font-style: italic;
}
.watchList {
  border: 1px solid silver;
  padding: 2px;
  margin-bottom: 6px;
}
.watchListNumericColumn {
  color: red;
}

stockFlexTable.getRowFormatter().addStyleName(0,"watchListHeader");
// no error, but I can't "go to"  ----------------^
stockFlexTable.addStyleName("watchList");
// ----------------------------^
stockFlexTable.getCellFormatter().addStyleName(0, 1, "watchListNumericColumn");
// ----------------------------------------------------^
stockFlexTable.getCellFormatter().addStyleName(0, 2, "watchListNumericColumn");
// ----------------------------------------------------^
// On these lines I get "Unknown CSS class"

<link type="text/css" rel="stylesheet" href="css/stockwatcher.css">

<stylesheet src="/css/stockwatcher.css"/>