soapbox/app/styles/chats.scss

.chat-list {
  position: fixed;
  bottom: 0;
  right: 20px;
  width: 265px;
  z-index: 99999;

  &__header {
    background: var(--brand-color);
    color: #fff;
    padding: 6px 10px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 6px 6px 0 0;
  }

  &__content {
    background: var(--foreground-color);
  }

  &__actions {
    background: var(--foreground-color);
  }
}