searchform.php

<form action="/" method="get">
  <!-- <label for="search">Search in <?php //echo home_url( '/' ); ?></label> -->
  <div>
    <div class="input-search">
      <input type="text" name="s" id="search" placeholder="Rotobusqueda" value="<?php //the_search_query(); ?>" />
    </div>
    <div class="input-search-button">
      <input type="image" alt="" src="<?php bloginfo( 'template_url' ); ?>/img/busca-chico.png" />
    </div>
  </div>
</form>