war/src/main/webapp/css/style.css has various CSS errors as reported by HtmlUnit, such as

filter: alpha(opacity=40); /* msie */
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";

These clutter log output when running HudsonTestCase/JenkinsRule tests, and might confuse standards-compliant browsers. Perhaps better to split browser-specific hacks into separate CSS files inserted only when the client identifies itself as that browser.