refactor: adjust archive styles for improved RTL layout

Author: zakariaf

_sass/base/_rtl.scss

@@ -204,13 +204,16 @@ html[dir='rtl'] {
 
   /* Archives */
   #archives {
+    $timeline-width: 4px;
+
     .year {
-      margin-left: 0;
-      margin-right: -4px;
+      right: 2px;
+      margin-right: -$timeline-width;
 
       &::before {
         left: auto;
         right: 79px;
+        float: right;
       }
 
       &::after {
@@ -223,6 +226,7 @@ html[dir='rtl'] {
       &::before {
         left: auto;
         right: 77px;
+        float: right;
       }
     }