message: control buttons positions
diff: @@ -511,9 +511,14 @@ $font-size: 14px;
  padding: 1em 0;
  min-height: 2.5em;
  + .sv_start_btn,
  + .sv_next_btn,
  .sv_complete_btn {
  float: right;
  }
  + .sv_prev_btn {
  + float: left;
  + }
  }
  }
  }
  