adding blockquote bar

Author: heckj

assets/stylesheets/new-stylesheets/pages/_post.scss

@@ -76,6 +76,17 @@
         border-radius: 10px;
         margin-bottom: 1em;
       }
+
+      blockquote {
+        border-left: 4px solid var(--site-link-with-right-arrow-color);
+        margin: 1.5em 0;
+        padding: 0.5em 0 0.5em 1.5em;
+        color: var(--color-syntax-plain-text);
+
+        p:last-child {
+          margin-bottom: 0;
+        }
+      }
     }
 
     .card-grid {