* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Helvetica;
  }
  
  body {
    background-color: #fafafa;
  }
  
  #main-container {
    display: flex;
    margin-top: 30px;
  }
  
  #banner-container,
  #form-container {
    flex: 1 1 0;
    width: 50%;
  }
  
  #banner-container {
    text-align: right;
  }
  
  #banner-container img {
    width: 100%;
    margin-right: 15px;
    margin-top: 25px;
    max-width: 380px;
  }
  
  #form-container {
    text-align: center;
  }
  
  #form-box {
    background-color: #fff;
    border: 1px solid #dbdbdb;
    width: 350px;
    margin-top: 30px;
  }
  
  #logo-insta {
    width: 175px;
    height: 51px;
    margin: 30px auto 12px;
  }
  
  #login-form {
    margin-top: 20px;
  }
  
  #login-form input {
    display: block;
    font-size: 12px;
    padding: 12px 9px;
    background-color: #fafafa;
    border: 1px solid #dbdbdb;
    border-radius: 3px;
    width: 268px;
    margin: 5px auto;
  }
  
  #login-form input[type="submit"] {
    background-color: #b2dffc;
    color: #fff;
    margin-top: 15px;
    border-radius: 5px;
    height: 30px;
    font-size: 13px;
    padding: 0;
    font-weight: bold;
  }
  
  .separator {
    position: relative;
  }
  
  .line {
    border-top: 1px solid #dbdbdb;
    width: 268px;
    margin: 25px auto 35px;
  }
  
  .separator span {
    position: absolute;
    text-transform: uppercase;
    color: #bbb;
    background-color: #fff;
    top: -6px;
    width: 50px;
    margin-left: -25px;
    font-size: 14px;
  }
  
  #facebook-login {
    margin-bottom: 25px;
  }
  
  #facebook-login a {
    text-decoration: none;
    color: #385185;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  #facebook-login img {
    width: 16px;
    height: 16px;
    margin-right: 8px;
  }
  
  #facebook-login span {
    font-weight: bold;
    font-size: 13px;
    margin-top: 1px;
  }
  
  #forgot-pass {
    margin-bottom: 20px;
    font-size: 12px;
  }
  
  #forgot-pass a {
    text-decoration: none;
    color: #373799;
  }
  
  #register-container {
    background-color: #fff;
    border: 1px solid #dbdbdb;
    width: 350px;
    margin-top: 10px;
    padding: 25px;
  }
  
  #register-container p {
    font-size: 14px;
    color: #262626;
  }
  
  #register-container a {
    color: #4a95f6;
    font-weight: bold;
    text-decoration: none;
  }
  
  #get-app-container {
    text-align: center;
    width: 350px;
  }
  
  #get-app-container p {
    margin: 20px 0;
    font-size: 13px;
  }
  
  #get-app-container a {
    text-decoration: none;
  }
  
  #get-app-container img {
    width: 136px;
    height: 40px;
  }
  
  footer {
    text-align: left;
    width: 1000px;
    margin: 50px auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  
  footer #footer-links {
    display: flex;
    list-style: none;
  }
  
  #footer-links li {
    margin-right: 10px;
  }
  
  #footer-links a,
  #copyright {
    text-decoration: none;
    color: #8e8e8e;
    font-size: 12px;
  }
  
  #copyright {
    margin-top: 10px;
  }
  
  @media (max-width: 450px) {
    body {
      background-color: #fff;
    }
  
    #banner-container {
      display: none;
    }
  
    #main-container,
    #form-box {
      margin-top: 0;
    }
  
    #form-container,
    #form-box,
    #register-container,
    #get-app-container {
      width: 100%;
      border: none;
    }
  
    footer {
      width: 90%;
    }
  
    #footer-links {
      flex-wrap: wrap;
      justify-content: center;
    }
  
    #footer-links {
      margin-bottom: 10px;
    }
  }