fix jumpy link

ulivz · ulivz · commit 6de2efa4bb21 · 2018-04-15T01:21:45.000+08:00
diff --git a/lib/default-theme/NavLinks.vue b/lib/default-theme/NavLinks.vue
@@ -103,8 +103,8 @@ export default {
             position relative
             border-bottom none
             font-weight 400
+            margin-bottom 0
             &:hover
-              margin-bottom 0
               color $accentColor
             &.router-link-active
               color $accentColor
