:root {
  --content-max-width: 800px;

  font-size: 12pt;
}

a:link, a:visited {
  color: inherit;
}

main {
  margin: auto;
  width: 100%;
  max-width: var(--content-max-width);
}

form {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(50%, 1fr) minmax(auto, 250px);
  align-items: center;
}

form > input:not([type="submit"]),
form > textarea {
  grid-column: 1;
}

form > input[type="submit"],
form > label {
  grid-column: 2;
}

form > input,
form > textarea {
  padding: 1rem;
  font-family: inherit;
  font-size: inherit;
}

form > label:nth-child(2) { grid-row: 1; }
form > label:nth-child(4) { grid-row: 2; }
form > label:nth-child(6) { grid-row: 3; }

.tip {
  font-size: .8rem;
}

form > textarea {
  height: 160px;
  resize: none;
}

form > input[type="submit"] {
  align-self: end;
  justify-self: center;
}

.messages {
  margin: 1rem 0;
  display: grid;
  gap: 1rem;
}

@media (max-width: 600px) {
  form {
    display: grid;
    grid-template-columns: 1fr;
    gap: .4rem;
  }

  form > * {
    grid-column: auto !important;
    grid-row: auto !important;
  }

  form > label {
    margin-top: .4rem;
  }

  form > input {
    padding: .4rem;
  }

  form > textarea {
    height: 100px;
  }
}