button,
input,
body {
  font-size: 1.1em;
}

body {
  color: white;
  background-color: rgb(31, 39, 54);
  font-family: sans-serif;
  max-width: 750px;
  margin: 0 auto;
  padding: 30px 10px;
}

.summary {
  margin-top: 10px;
  font-weight: bold;
}

.invitees {
  margin: 10px 10px;
  padding: 10px 10px;
}

.invitee {
  margin: 10px 0px;
}

.btn-warn {
  color: #A22;
}