I thought of that also, but I still get errors...
Error Line 6 column 80: character data is not allowed here.
...="../css/engine.css" title="engine" />
You have used character data somewhere it is not permitted to appear. Mistakes that can cause this error include putting text directly in the body of the document without wrapping it in a container element (such as a <p>aragraph</p>) or forgetting to quote an attribute value (where characters such as "%" and "/" are common, but cannot appear without surrounding quotes).