.header {
    display: flex;
    flex-direction: column;
    box-shadow: 1px 1px 4px 0 rgba(0,0,0,.1);
    position: fixed;
    width: 100%;
    z-index: 3;
    top: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
  }


  .title-picture{
    padding-top: 40%;
    width: 100%; 
    height: auto;
  }


  .header-logo {
    width: 100%;
    height: auto;
    max-height: 20vh;
  }


  .header ul {
    margin: 0;
    padding: 0;
    list-style: none;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.75f);
  }
  
  .header li a {
    display: block;
    padding: 20px 20px;
    color:#192b5b;
    font-weight: bold;
    text-decoration: none;
    font-family: Quicksand;
    
  }
  
  .header li a:hover,
  .header .menu-btn:hover {
    background-color: #E0E0E0;
  }
  
  .header .logo {
    display: block;
    float: left;
    font-size: 2em;
    padding-top: 10px;
    padding-bottom: 10px;
    padding-left: 14%;
    padding-right: 20px;
    text-decoration: none;
    font-family: Quicksand;
  }

  .header .logo:visited{
    text-decoration: none;
    color: white;
  }
  
  /* menu */
  
  .header .menu {
    clear: both;
    max-height: 0;
    transition: max-height .2s ease-out;
    float: left;
  }
  
  /* menu icon */
  
  .header .menu-icon {
    cursor: pointer;
    display: inline-block;
    float: right;
    padding: 28px 20px;
    position: relative;
    user-select: none;
  }
  
  .header .menu-icon .navicon {
    background: white;
    display: block;
    height: 2px;
    position: relative;
    transition: all .2s ease-out;
    width: 18px;
  }
  
  .header .menu-icon .navicon:before,
  .header .menu-icon .navicon:after {
    background: white;
    content: '';
    display: block;
    height: 100%;
    position: absolute;
    transition: all .2s ease-out;
    width: 100%;
  }
  
  .header .menu-icon .navicon:before {
    top: 5px;
  }
  
  .header .menu-icon .navicon:after {
    top: -5px;
  }
  
  /* menu btn */
  
  .header .menu-btn {
    display: none;
  }
  
  .header .menu-btn:checked ~ .menu {
    max-height: 240px;
  }
  
  .header .menu-btn:checked ~ .menu-icon .navicon {
    background: transparent;
  }
  
  .header .menu-btn:checked ~ .menu-icon .navicon:before {
    transform: rotate(-45deg);
  }
  
  .header .menu-btn:checked ~ .menu-icon .navicon:after {
    transform: rotate(45deg);
  }
  
  .header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before,
  .header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
    top: 0;
  }


  @media (max-width: 1200px) {
    .header{
      background-color: #E0E0E0;
    }
  }
  
  /* 48em = 768px */
  
  @media (min-width: 1200px) {
    .title-picture {
      max-height: 100vh;
      object-position: center top;
      padding-top: 0;
    }
    .header {
      flex-direction: row;
    }
    .header-logo {
      width: 10%;
      height: auto;
      padding-left: 20%;
    }
    .header li {
      float: left;
    }
    .header li a {
      padding: 20px 30px;
    }
    .header .menu {
      clear: none;
      float: left;
      max-height: none;
    }
    .header .menu-icon {
      display: none;
    }
  }