Layout

<div id="search">
  <form
    target="_parent"
    action="https://esearch.rakuten.co.jp/rms/sd/esearch/vc"
    accept-charset="euc-jp"
    method="get"
    class="cf"
  >
    <p>
      <input type="hidden" name="sv" value="6" /><input
        type="hidden"
        name="sid"
        value="218007"
      /><input type="hidden" name="su" value="ayano-koji" /><input
        type="hidden"
        name="sn"
        value="あやの小路"
      /><input type="hidden" name="f" value="A" /><input
        type="text"
        value=""
        onfocus="if( this.value == '' ) { this.value = ''; } "
        onblur="if( this.value == '' ) { this.value = ''; } "
        id="txtarea"
        name="sitem"
        placeholder="入力例：長財布　マチ有"
      /><input type="submit" value="検索" />
    </p>
  </form>
</div>