message: fix fireside expander thing
diff: <script lang="ts" src="./fireside"></script>
  <template>
  - <div>
  - <div class="-expander" />
  <div class="-fireside">
  <div class="-header">
  <template v-if="fireside">
  </div>
  </div>
  </div>
  - </div>
  </template>
  <style lang="stylus" scoped>
  @import '~styles/variables'
  @import '~styles-lib/mixins'
  -// This is to make sure that it doesn't look broken when switching pages.
  -.-expander
  - height: 60vh
  -
  .-fireside
  change-bg('bg')
  overflow: hidden
  bottom: var(--shell-bottom)
  left: var(--shell-left)
  right: var(--shell-right)
  + z-index: $zindex-shell-pane-under
  .-header
  flex: none
  