Added some more margins to the Important, Caution and Warning admonitions.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3720 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

stylesheets/lfs.css

@@ -140,7 +140,7 @@ div.important, div.warning, div.caution {
   background-color: #fffff6;
   border: medium solid #400;
   width: 90%;
-  margin: .5em auto;
+  margin: 1.5em auto;
   color: #600;
   font-size: larger;
 }