#main {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

#navigation {
  width: 500px;
  position: fixed;
  overflow: auto;
  top: 0;
  left: -525px;

  background: #ECECEC;
  min-height: 100%;
  height: 100%;
  height: 100vh;

  overflow: scroll;
  -webkit-overflow-scrolling: touch;
  padding: 9px;
  padding-top: 10px;

  transition: left .2s ease-out;
  box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);

  z-index: 1;
}

#navigation.open {
  left: 0;
}

#opener {
  position: absolute;
  top: 0;
  left: 0;
  padding: 10px;
  stroke: #E2E2E2;
  fill: #E2E2E2;
}

#opener:hover {
  stroke: #777;
  fill: #777;
}

#header {
  height: 30px;
}

#update {
  float: right;
}

.CodeMirror {
  border: 1px solid #eee;
  height: calc(100vh - 24px);
  box-sizing: border-box;
  background: #fbfbfb;
  box-shadow: inset 0 0 1px rgba(0,0,0,.8);
}

.material-icons {
  color: #333;
  cursor: pointer;
}

.material-icons:hover {
  color: #525252;
}

.material-icons:active {
  color: #000;
}

.pagedjs_page {
  box-shadow: 0 0 4px #ccc;
}