html {
  position: relative;
  min-height: 100%;
}

body {
  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
  min-height: 10rem;
  padding-top: 4.5rem;
  margin-bottom: 60px; /* Margin bottom by footer height */
}

.main {
  padding-bottom: 20px;
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 60px;
  line-height: 60px;
  background-color: #f5f5f5;
}

.jumbotron {
  background-color: white;
}

.navbar-collapse {
  justify-content: flex-end;
}

.feedback {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
}