message: Center HeaderButtons
diff: @@ -68,22 +68,27 @@ limitations under the License.
  .mx_RightPanel_membersButton::before {
  mask-image: url('$(res)/img/feather-customised/user.svg');
  + mask-position: center;
  }
  .mx_RightPanel_filesButton::before {
  mask-image: url('$(res)/img/feather-customised/files.svg');
  + mask-position: center;
  }
  .mx_RightPanel_notifsButton::before {
  mask-image: url('$(res)/img/feather-customised/notifications.svg');
  + mask-position: center;
  }
  .mx_RightPanel_groupMembersButton::before {
  mask-image: url('$(res)/img/icons-people.svg');
  + mask-position: center;
  }
  .mx_RightPanel_roomsButton::before {
  mask-image: url('$(res)/img/icons-room-nobg.svg');
  + mask-position: center;
  }
  .mx_RightPanel_headerButton_highlight::after {
  