Footnotes styling updates

.themes/classic/sass/base/_typography.scss

@@ -80,10 +80,12 @@ strong { font-weight: bold; }
 
 em { font-style: italic; }
 
-sup, sub { font-size: 0.8em; position: relative;  display: inline-block; }
+sup, sub { font-size: 0.75em; position: relative;  display: inline-block; padding: 0 .2em; line-height: .8em;}
 sup { top: -.5em; }
 sub { bottom: -.5em; }
 
+a[rev='footnote']{ font-size: .75em; padding: 0 .3em; line-height: 1; }
+
 q { font-style: italic;
   &:before { content: "\201C"; }
   &:after { content: "\201D"; }
@@ -99,8 +101,6 @@ abbr, acronym { border-bottom: 1px dotted; cursor: help; }
 
 pre, code, tt { @extend .mono; }
 
-sub, sup { line-height: 0; }
-
 hr { margin-bottom: 0.2em; }
 
 small { font-size: .8em; }
@@ -161,3 +161,4 @@ article blockquote {
   white-space: pre-wrap;
   word-wrap: break-word;
 }
+