body {
  max-width: 600px;
  width: 100%;

  margin: 0 auto;
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
}

.feil {
  color: red;
}

.flag {
  font-size: large;
  margin-top: 50px;
}

#flagform {
  margin-top: 100px;
}

label {
  display: block;
}

button[type='submit'] {
  display: block;
  margin: 0 auto;
}

p,
label,
input,
button {
  margin: 7px;
}

button {
  font-size: large;
  width: 100px;
}