Revert "fix: alignment issue #88 #89" (#95)

This reverts commit ced055e.

src/components/DiagramFrame/SeqDiagram/MessageLayer/MessageLayer.vue

@@ -56,42 +56,11 @@ onUpdated(() => {
     border-right-width: 7px;
   }
 
-  .occurrence .interaction.sync.self {
-    border-left-width: 7px;
-  }
-
-  .occurrence {
-    .interaction.sync.self {
-      border-left-width: 7px;
-    }
-    .interaction.async {
-      border-right-width: 0;
-    }
-  }
-
-  .occurrence {
-    .occurrence {
-      .interaction.sync.self {
-        border-left-width: 7px;
-      }
-      .interaction.async {
-        border-right-width: 7px;
-      }
-    }
-  }
-  .interaction.sync.self {
-    border-left-width: 0;
-  }
-
-  .interaction.async {
-    border-left-width: 8px;
-  }
-
   .interaction.sync.right-to-left {
     /* This border width configuration make sure the content width is
        the same as from the source occurrence's right border to target
        occurrence's left boarder (boarder not inclusive).*/
-    border-right-width: 7px;
+    border-right-width: 0;
     border-left-width: 7px;
   }