html,
body {
  height: 100%;
}

body {
  display: flex;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

main {
  width: 100%;
  max-width: 450px;
  padding: 15px;
  margin: auto;
}

.btn-primary, .btn-primary:hover, .btn-primary:active, .btn-primary:visited, .btn-primary:focus {
  background-color: #E91297;
  border-color: #E91297;
}