message: fix: make call area smaller on small screens
  so that it doesn't need a scrollbar
diff: @@ -30,6 +30,9 @@ limitations under the License.
  .mx_CallView_voice {
  height: 360px;
  + @media only screen and (max-height: 768px) {
  + height: 300px;
  + }
  }
  }
  