# Rendering Changes in 21.0.0

The Kendo UI for Angular 21.0.0 release introduces changes in the rendering of several components.

## DropDowns

* Replaced the single `ul.k-list-ul` inside `div.k-list-content` with multiple `ul.k-list-ul` elements that represent all groups inside the `div.k-list-content`.

## Chat

* Removed `k-avatars` class from the `k-message-list` element wrapping the messages list.
* Removed `k-first` and `k-last` classes from the `k-message` element.
* Replaced `k-appbar-light` class with `k-appbar-inherit`.
* Replaced `k-icon-xxl` class with `k-chat-xl` on the icons inside the `k-chat-file` element (the file icons, this is also applicable when the files are rendered for preview at the top of the message box).
* Moved the `k-message-reference k-message-reference-receiver` element from being a child of `k-chat-bubble-text` to being a child of `k-bubble-content` and sibling of `k-chat-bubble-text`.

## TabStrip

* Removed `k-item` class from the `k-tabstrip-item` element.