.markdown-body {
  box-sizing: border-box;
  min-width: 200px;
  max-width: 980px;
  margin: 0 auto;
  padding: 45px;
}

.ptitle {
  padding-bottom: 0;
}

#title h1 {
  font-size: 3em !important;
  padding-bottom: 0;
  border: none;
}

.hoverlink:hover {
  color: #777 !important;
  text-decoration: none !important;
}

.title a {
  color: #444 !important;
}

.tags a {
  color: #6a737d;
}

.ptitle p {
  color: #777 !important;
}

#title p a {
  padding: 0 1em 0 1em;
}

.title div {
  justify-content: space-between;
}

@media (min-width: 768px) {
  .flex {
    display: flex;
  }
  #nav {
    margin-right: -1em;
  }
  .page-next {
    display: none;
  }
}

@media (max-width: 767px) {
  .small-flex {
    display: flex;
  }
  .markdown-body {
    padding: 15px;
  }
  #title {
    text-align: center;
  }
  .page-next-2 {
    display: none;
  }
}

.page-pc {
  width: 5em;
}
.page-next,
.page-next-2 {
  text-align: right;
}

.page-change {
  position: relative;
  display: inline-block;
  width: 2em;
  height: 2em;
  border-radius: 3px;
  transition: 0.1s;
  font-size: 1em;
  line-height: 2em;
  text-align: center;
  background-color: #fff;
  color: #000;
  cursor: pointer;
}
.page-change:hover {
  background-color: #eee;
}
#page-change-current {
  background-color: #eee;
  cursor: default;
}
#page-changes {
  text-align: center;
}

@counter-style counter-1 {
  system: extends decimal;
  prefix: "1.";
  suffix: " ";
}

@counter-style counter-1 {
  system: extends decimal;
  prefix: "1.";
  suffix: ". ";
}

.toc {
  border: 1px solid gray;
  display: table;
  padding: 7px;
  margin-bottom: 16px;
}

.toc h4 {
  text-align: center;
  margin: 0;
}

.toc-root {
  padding: 0 !important;
  margin: 0 !important;
}

.toc ul {
  list-style: none;
}

.tocnumber {
  color: black;
}