body{
  font-family: Arial, sans-serif;
  background-color: #f4f6f8;
  color: #222;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

main{
  max-width: 900px;
  margin: 30px auto;
  padding: 20px;
  background-color: white;
  border: 1px solid #ddd;
  border-radius: 8px;
}

h1{
  font-size: 28px;
  margin-bottom: 10px;
  color: #0b3a6a;
}

h2{
  font-size: 20px;
  margin-top: 25px;
  margin-bottom: 10px;
  color: #0b3a6a;
}

h3{
  font-size: 16px;
  margin-top: 15px;
  margin-bottom: 6px;
  color: #333;
}

p{
  margin: 0 0 12px 0;
}

.knop{
  display: inline-block;
  margin: 30px 0 0;
  padding: 10px 18px;
  background-color: #0b3a6a;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
}

.knop:hover{
  background-color: #09509a;
}