body{font-family:Arial,Helvetica,sans-serif;margin:20px}.container{max-width:900px;margin:0 auto}textarea{width:100%;min-height:200px;font-family:monospace}input,select,button{margin:6px 0}.xmlPreview{white-space:pre-wrap;background:#f7f7f7;padding:10px;border:1px solid #ddd}