html,
body {
  min-height: 100%;
}

body {
  display: flex;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
  background-image: url('../img/background.jpg');
  background-size: cover;
}

.main_image {
  width: 450px;
}

.ctlc_lead {
    font-size: 1.5rem;
}