Rename CSS class selectors from .anywhere-footnote-* to .afnote-* for improved brevity and consistency.

Author: RayOffiah

src/css/asciidoctor-anywhere-footnote.css

@@ -1,38 +1,38 @@
-.anywhere-footnote-marker {
+.afnote-marker {
   vertical-align: super;
   font-size: 100%;
   text-decoration: none;
 }
 
-.anywhere-footnote-block {
+.afnote-block {
   text-decoration: none;
 }
 
-.anywhere-footnote-hr-divider {
+.afnote-hr-divider {
   height: 1px;
   background-color: #ccc; /* Standard gray color similar to default HR */
   border: none;
   margin: 0.5em 0; /* Standard HR margin */
   width: 20%;
 }
 
-div.anywhere-footnote-horizontal dl {
+div.afnote-horizontal dl {
   display: grid;
   grid-template-columns: 25px auto;
   grid-column-gap: 1px;
 }
 
 /* Force each dt and dd to be on the same line */
-div.anywhere-footnote-horizontal dl > dt,
-div.anywhere-footnote-horizontal dl > dd {
+div.afnote-horizontal dl > dt,
+div.afnote-horizontal dl > dd {
   display: inline !important;
   vertical-align: top !important;
   margin: 0 !important;
   padding: 0 !important;
 }
 
 /* Remove margins from paragraphs inside dd */
-div.anywhere-footnote-horizontal dl > dd p {
+div.afnote-horizontal dl > dd p {
   display: inline;
   margin: 0;
   padding: 0;