Right, I just meant that we can join two separate rules to have single comment explaining ```7rem``` number like this :) But it isn't that important :)
```
 /* Add a margin at the end of the last thread or message node to avoid overlay
  * with the edit mode menu */
.edit #composer-messages-container,
.edit .edit-container > :last-child {
  margin-bottom: 7rem;
}
```