bad: .special > *:dir(rtl)
    but ok: .special:dir(rtl) > *
    3. multiple selectors per line? ok.
  -->
  <dom-module id="x-inner-dir">
    <template>
      <style>
        :host {
          display: block;
          height: 20px;
          color: white;
        }
        input, section {
          border-top-width: 0px;
        }

        section:dir(rtl), input:dir(rtl) {
          border: 10px solid rgb(123, 123, 123);
        }

        .special:dir(rtl) > * {
          color: rgb(0, 128, 0);
       