<form action="/enviar" method="post" class="formulario">
   <label class="formargen" for="email"><h1><?php echo $ph["formcontacto_titulo"][$idioma];?></h1></label>
   <input class ="w3-input" type="email" id="email" name="email" placeholder="<?php echo $ph["formcontacto_email"][$idioma];?>" required>
   <input class="w3-button w3-black w3-padding-small w3-large margenboton button" type="submit" value=<?php echo $ph["formcontacto_boton"][$idioma];?>>
</form>