@media only screen and (max-width: 768px) {
  body {
    margin: 0 !important;
  }
  header {
    height: 48px;
    background-color: #8c3945;
    color: #FFF;
    margin-bottom: 20px;
    display: flex;
    flex-direction: row;
    align-content: center;
    align-items: center;
    vertical-align: middle;
    justify-content: center;
  }
  header span {
    display: inline;
    padding-left: 10px;
  }
  header span svg {
    color: #FFF;
    max-height: 48px;
    width: unset;
    padding-left: 5px;
    padding-right: 5px;
  }
  a>svg {
    width: unset;
    margin: unset;
    height: 40px;
  }
  span#reader-toc {
    cursor: pointer;
  }
  span#reader-toc a {
    padding-right: 10px;
  }
  svg#go-previous {
    cursor: pointer;
    padding-left: 2px;
  }
  svg#go-next {
    cursor: pointer;
    padding-right: 2px;
  }
  span#reader-navigation {
    display: none;
  }
  span#reader-navigation-mobile {
    color: #FFF;
    display: flex;
    position: fixed;
    bottom: 0px;
    width: 100%;
    height: 42px;
    flex-direction: row;
    align-items: space-between;
    background-color: black;
    vertical-align: middle;
    padding: 2px;
  }
  span#reader-navigation-mobile div.navigation-spacer {
    flex: 1 1 auto;
  }
  span#reader-navigation-mobile a:visited {
    color: #FFF;
  }
  span#reader-navigation-mobile a {
    color: #FFF;
  }
  header div.meta {
    flex: 1 1 auto;
    padding-left: 20px;
    padding-left: 20px;
  }
  header div.meta h1 {
    display: inline;
    font-size: 1.6em;
  }
  header div.meta h2 {
    display: inline;
    font-size: 1em;
  }
  hr {
    max-width: 75rem;
    height: 0;
    border-right: 0;
    border-top: 0;
    border-bottom: 1px solid #cacaca;
    border-left: 0;
    margin: 1.25rem auto;
    clear: both;
  }
  .book-content {
    padding-left: 1rem;
    padding-right: 1rem;
    margin-bottom: 60px;
  }
  .cover {
    max-height: 70%;
    position: absolute;
    text-align: center;
    width: 100%;
    height: 100%;
  }
  img.book-cover {
    max-height: 80vh;
    position: relative;
    margin: auto;
  }
}