:root {
  font-family: system-ui, sans-serif;
  color: #182f3a;
  background: #f3f6f7;
}
main {
  max-width: 720px;
  margin: 3rem auto;
  padding: 2rem;
  background: white;
  border-radius: 16px;
}
label {
  display: block;
  margin: 1rem 0;
}
input:not([type="checkbox"]) {
  display: block;
  width: 95%;
  padding: 0.7rem;
  border: 1px solid #a9b9c0;
  border-radius: 6px;
}
button {
  padding: 0.6rem 1rem;
  margin: 0.3rem;
  border: 0;
  border-radius: 6px;
  background: #165e6a;
  color: white;
  cursor: pointer;
}
article {
  border-top: 1px solid #c8d4d7;
  padding: 1rem 0;
}
#notice {
  color: #9b2626;
  white-space: pre-wrap;
}
fieldset {
  border: 1px solid #c8d4d7;
}