html,
body {
  height: 100%;
}

body {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
}

.form-token {
  width: 100%;
  max-width: 600px;
  padding: 15px;
  margin: auto;
}

.form-token h1 {
    margin-bottom: 20px;
    color: #721c24;
}

.form-token .form-control {
  position: relative;
  box-sizing: border-box;
  height: auto;
  padding: 10px;
  font-size: 16px;
}