.viewer-js {
 height: 400px;
 width: 70vh;
}
footer .wrapper {
  text-align:center
}
.blocks {
  text-align:justify
}
.page .toc-block > ul > li {
  border-top: 3px solid #000;
  font-variant: normal;
  background-color: #8bb5cb;
  width: calc(50% - 30px);
  margin: 10px 15px;
  padding: 6px 6px;
}
.toc-block > ul > li > a {
  font-weight: normal;
}