html {
  font-size: 62.5%;
  font-family: Roboto;
}

body {
  margin: 0;
  padding: 0;
}

.centred-prompt {
  background: #f0f0f0;
  display: grid;
  grid-template-columns: 1fr minmax(auto, 30rem) 1fr;
  grid-template-rows: 1fr auto 1fr;
  min-height: 100vh;
}

.centred-prompt .prompt-content {
  padding: 2rem;
  background: white;
  grid-column: 2 / 3;
  grid-row: 2 / 3;
  border-radius: 1rem;
  box-shadow: 0 0 3rem rgba(0, 0, 0, 0.1);
  text-align: center;
}

.centred-prompt .text-divider {
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  text-transform: uppercase;
}

.centred-prompt .text-divider::before, .centred-prompt .text-divider::after {
  content: '';
  display: block;
  border-bottom: 1px solid #ccc;
  flex: 1;
  margin: 0 .5rem;
}