CarmenScholte/fullscreen-fixed-image-header.html

## fullscreen-fixed-image-header.html
<!doctype html>
<html lang="en">

<head>
  <base href="/">

  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
    integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <style>
    html {
      height: 100%;
    }

    body {
      margin: 0;
    }

.header {
  height: calc(100vh - 56px);
}

.background {
  width: 100%;
}

.background-gradient {
  position: absolute;
  height: calc(100vh - 56px);
  width: 100%;
  top: 0;
  left: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.25) 0%, rgba(0, 0, 0, 0) 33%);
}

.background-image {
  position: fixed;
  min-width: 100%;
  min-height: 100%;
  width: 1%;
  height: 1%;
  object-fit: cover;
  z-index: -1;
}

.branding {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  margin-bottom: 200px;
  color: white;
}

.navigation {
  position: sticky;
  top: 0;
  z-index: 2;
  background: white;
}

.nav-item {
  padding: 16px;
}

    .content-placeholder {
      height: 2000px;
      background-color: white;
    }
</style>
</head>
<body>
<div class="header">
  <div class="background">
    <img class="background-image"
      src="https://images.unsplash.com/photo-1508873699372-7aeab60b44ab?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=3300&q=80" />

    <div class="background-gradient"> </div>
  </div>

  <div class="branding">
    <div class="container">
      <div class="logo">LOGO</div>

      <h1 class="title">Title</h1>

      <h2 class="subtitle">Subtitle</h2>
    </div>
  </div>
</div>

<div class="navigation">
  <div class="container">
    <div class="row">
      <div class="nav-item">
        Education
      </div>

      <div class="nav-item">
        Research
      </div>

      <div class="nav-item">
        Contact
      </div>
    </div>
  </div>
</div>
<div class="content-placeholder"></div>
</body>
</html>