@media (min-width: 0px) and (max-width:767px)
{
  .form form
  {
    width: 90%;
  }
  .definition_item
  {

  	width: 100%;
  }
}
@media (min-width: 768px) and (max-width:1200px)
{
  .form form
  {
    width: 80%;
  }
  .definition_item
  {

    width: 100%;
  }
}