body {
  background-image: url("../img/phone.jpg");
  background-color: #ccc;
  background-position: center;
  background-size: cover;
  font-size: 20px;
  color: white
}

.overlay {
  background-image: url("../img/phone.jpg");
  opacity: 0.89;
}

header {
  color: rgb(255, 255, 255);
  text-align: center;
  font-size: 60px
}

h3 {
  color: white;
  font-style: oblique;
  text-decoration: underline;
}

h2 {
  color: rgb(81, 240, 184);
  h3 {
    color: white;
    text-decoration: underline;
  }
  .btn-success {
    color: rgb(81, 240, 184)
  }