message: Tweak the dialog dimensions
  Make height/width max (as per design wish) and
  actual based on viewport.
diff: @@ -15,9 +15,10 @@ limitations under the License.
  */
  .mx_HostSignupDialog {
  - min-height: 531px;
  + width: 90vw;
  + max-width: 580px;
  + height: 80vh;
  max-height: 600px;
  - width: 580px;
  .mx_HostSignupDialog_info {
  text-align: center;
  @@ -100,8 +101,10 @@ limitations under the License.
  }
  .mx_HostSignup_persisted {
  - width: 580px;
  - height: 600px;
  + width: 90vw;
  + max-width: 580px;
  + height: 80vh;
  + max-height: 600px;
  top: 0;
  left: 0;
  position: fixed;
  