I tried to change the PDF export of a space so that the top place a logo and even though I try, it seems that confluence does not see any of my modifications, the code I'm using is identical to the example on page of documentation.
PDF Space Export Title Page

Planning for Confluence 4.0
PDF Export Stylesheet
.fsTitlePage
{
margin-left: auto;
margin-top: 50mm;
margin-right: auto;
page-break-after:always
}
.fsTitle
{
font-size: 42px;
font-weight: bold;
margin: 72px 0 4px 0;
text-align:center;
}