Doc: remove page margins and limits to 60em paragraphes only instaead of the entire page (many declarations and tables are larger than 60em anyway)

doc/eigendoxy.css

diff --git a/doc/eigendoxy.css b/doc/eigendoxy.css
index cc5e28c..efc9601 100644
--- a/doc/eigendoxy.css
+++ b/doc/eigendoxy.css
@@ -1222,15 +1222,12 @@
 /******** Eigen specific CSS code ************/
 
 
-
-body {
-  max-width:60em;
-  margin-left:5%;
-  margin-top:2%;
-  font-family: Lucida Grande, Verdana, Geneva, Arial, sans-serif;
+p, dl.warning, dl.attention, dl.note
+{
+        max-width:60em;
+        text-align:justify;
 }
 
-
 img {
     border: 0;
 }