chore($theme-default): cursor pointer (#867)

J911 · ulivz · commit cfb275a700fb · 2019-03-14T00:17:49.000+08:00
diff --git a/lib/default-theme/SidebarButton.vue b/lib/default-theme/SidebarButton.vue
@@ -17,6 +17,7 @@
   padding 0.6rem
   top 0.6rem
   left 1rem
+  cursor pointer
   .icon
     display block
     width 1.25rem
