<form action="https://cscie12.dce.harvard.edu/echo" method="post">
   <p>Number:
     <br/>

     <input type="number" name="n"/>

   </p>
   <p>Range from 1 to 10, increments of 1:
     <br/>

     <input type="range" min="1" max="10" step="1" name="r"/>

   </p>
   <p>
     <input type="submit"/>

   </p>
 </form>