style.css

@import url('https://fonts.googleapis.com/css?family=Comfortaa|Antic|IM+Fell+English+SC|Kurale');
@import url('https://fonts.googleapis.com/css?family=Allura|La+Belle+Aurore|Nothing+You+Could+Do|Petit+Formal+Script');

* {
  margin: 0;
  padding: 0;
  font-family: "Comfortaa";
}

body {
  display: block;
  position: relative;
  min-height: 675px;
}

body::after {
  content: "";
  background: url("http://www.environmentandsociety.org/sites/default/files/styles/popup/public/wegener-expedition2-walk_0.jpg?itok=u9iamiKA") no-repeat center center;
  background-size: cover;
  background-attachment: fixed;
  opacity: .5;
  display: block;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  position: absolute;
  z-index: -1;
}

#header-title {
  font-family: "IM Fell English SC";
}

#header-title, #errors {
  text-align: center;
}

#subtitle {
  font-family: "La Belle Aurore";
  text-align: center;
  margin-top: 100px;
}

h1 {
  font-size: 4em;
}

.page-header {
  font-family: "La Belle Aurore";
  text-align: center;
  margin-top: 20px;
}

button, p {
  font-family: "Antic";
}

.hidden {
  display: none;
}

.top-nav {
  display: block;
  text-align: center;
}

.top-nav button {
  display: inline-block;
}

.filter-type {
  display: inline-flex;
  text-align: center;
}

.filter-form {
  display: block;
  text-align: center;
}

.filter-form button {
  width: 175px;
  margin-left: 20px;
}

.filter-form select, .filter-form input {
  width: 300px;
}

#narrow-search {
  margin: 25px 35px 0;
}

#content {
  overflow: scroll;
  min-height: 500px;
}

#attribution {
  font-size: .75em;
  text-align: center;
  margin-bottom: 10px;
}