message: use sticky because I'm lazy
diff: @@ -69,11 +69,12 @@ header #passage-header{
  }
  #passage-header {
  - position: fixed;
  + position: sticky;
  + position: -webkit-sticky;
  top: 0;
  left: 0;
  width: 100%;
  - background-color: #eeeeee;
  + background-color: transparent;
  /* background-blend-mode: lighten; */
  padding-top: 1em;
  padding-bottom: 0.5em;
  