feat: add a strikethrough style to del class and remove quote.

ahikar.css

@@ -27,6 +27,10 @@ body {
 .cb {
   column-span: all; }
 
+.del {
+  text-decoration: line-through;
+}
+
 .g {
   color: #400000; }
 
@@ -63,9 +67,6 @@ body {
   color: #0645ad;
   text-decoration: none; }
 
-.quote {
-  font-style: italic; }
-
 .ref {
   color: #0645ad; }
 

ahikar.scss

@@ -28,6 +28,10 @@ body {
 .cb {
   column-span: all; }
 
+.del {
+  text-decoration: line-through;
+}
+
 .g {
   color: #400000; }
 
@@ -64,9 +68,6 @@ body {
   color: #0645ad;
   text-decoration: none; }
 
-.quote {
-  font-style: italic; }
-
 .ref {
   color: #0645ad; }