main.css

body {
    margin: 80%;
    margin: 0 auto;
    padding: 50px;
    font-size: 28px;
    font-family: Garamond;
    letter-spacing: 1.5px;
    color: #222;
    text-transform: uppercase;
    font-weight: bold;
    background-image: url('https://images.pexels.com/photos/231008/pexels-photo-231008.jpeg?w=1260&h=750&auto=compress&cs=tinysrgb');
    background-position: bottom;
    background-size: cover;
  }
  
  .header {
      width: 100%;
      padding: 25px;
  }
  
  .header--container {
      width: 60%;
      margin: 0 auto;
      background-color: rgba(0, 0, 0, .40);
      border-radius: 5px;
      padding: 25px;
  }
  
  h1 {
    font-family: Helvetica;
    font-size: 36px;
    text-align: center;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #fff;
  }
  
  .overlay {
    width: 50%;
    margin: 0 auto;
    height: 525px;
  }
  
  .input {
    margin: 0 auto;
    width: 100%;
    height: 35px;
    border-radius: 3px;
    border: 2px solid #f2f2f2;
    padding: 2px;
    text-align: center;
    color: #222;
    font-family: Helvetica;
    font-size: 18px;
    text-transform: uppercase;
  }
  
  ul li {
    list-style: none;
    padding: 0px;
    margin-top: -15px;
    margin-left: -40px;
  }
  
  .btn {
    width: 100%;
    height: 45px;
    background-color: rgba(255, 255, 255, .65);
    border: none;
    border-radius: 2px;
    color: #222;
    font-size: 22px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-family: Helvetica;
    margin: 0 auto;
  }
  
  img {
    height: 30%;
  }
  
  .paragraph--header {
    display: inline-block;
  }
  
  .hidden {
    display: none;
  }
  
  .show {
    display: block;
  }