input.knop {
 width:100px;
 border:none;
  font-size:12px;
  font-weight:bold;
  font-family: "Open Sans", Arial, sans-serif;
  text-decoration: none;
  text-align: center;
  background-color: #3f54a0;
  color: #FFFFFF;
  padding: 3px 3px 3px 3px;
  appearance: none;
  box-shadow: none;
  border-radius: 0;
}