Untitled

<!DOCTYPE html>
<html>
 <head>
  <meta charset="utf-8">
  <title>Кнопка</title>
 </head>
 <body>
  <form action="/gpio/0">
   <p>
    <button type="submit">
     <img src="images/umbrella.gif" alt="Погасить" style="vertical-align:middle">
    </button>
   </p>
  </form>
  <form action="/gpio/1">
   <p>
    <button type="submit">
     <img src="images/umbrella.gif" alt="Зажечь" style="vertical-align:middle">
    </button>
   </p>
  </form>
 </body>
</html>