* {
  margin: 0;
  padding: 0;
}
body {
  font-family:
    Source Sans Pro,
    Helvetica Neue,
    Arial,
    sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #34495e;
  background-color: #fff;
  z-index: 20;
}
.root {
  position: relative;
  width: 100%;
  height: 100%;
}
aside {
  width: 245px;
  position: fixed;
  left: -245px;
  border-right: 1px solid #eceef1;
  height: calc(100% - 0px);
  z-index: 30;
  box-sizing: border-box;
  -webkit-transition: left 0.5s;
  transition: left 0.5s;
  overflow-x: hidden;
  overflow-y: auto;
  background-color: #fff;
}
aside div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  background-color: #616161;
  position: sticky;
  top: 0;
}
aside div h1 {
  padding: 10px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
aside div button {
  border: 0;
  display: block;
  outline: 0;
  padding: 10px;
  color: #fff;
  font-size: 24px;
  background-color: #616161;
}
aside ul {
  padding-left: 15px;
  padding-right: 15px;
}
aside li {
  list-style: none;
  line-height: 30px;
}
aside li a {
  color: #87969d;
  display: block;
  cursor: pointer;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
aside li a.active {
  color: #42b983;
  font-weight: 400;
}
article {
  padding-bottom: 50px;
}
article .open {
  font-size: 24px;
  position: fixed;
  padding-top: 6px;
  padding-left: 10px;
}
article .title {
  width: 600px;
  margin-left: auto;
  margin-right: auto;
  padding-top: 46px;
  padding-bottom: 10px;
  font-size: 20px;
  font-weight: 400;
  line-height: 24px;
  box-sizing: border-box;
}
article .attr {
  width: 600px;
  font-size: 12px;
  line-height: 36px;
  margin-left: auto;
  margin-right: auto;
  border-bottom: 1px dashed #eceef1;
}
article .attr span {
  margin-right: 20px;
}
article .attr span a {
  color: #42b983;
  text-decoration: none;
}
article .content {
  width: 600px;
  font-size: 14px;
  margin-left: auto;
  margin-right: auto;
  padding-top: 1rem;
  box-sizing: border-box;
  padding-bottom: 1.2rem;
}
article .content p {
  font-size: 14px;
  margin-bottom: 8px;
}
article .content a {
  font-size: 14px;
  color: #42b983;
  text-decoration: none;
}
article .content img {
  max-width: 100%;
}
article .content font[size] {
  display: block;
  margin: 5px 0;
}
footer {
  height: 40px;
  padding-top: 7px;
  padding-left: 25px;
  padding-right: 25px;
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  box-sizing: border-box;
  -webkit-transition: all 0.5s;
  background-color: #fff;
  z-index: 20;
}
footer div {
  color: #87969d;
  position: relative;
  height: 30px;
  line-height: 30px;
  width: 50%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-sizing: border-box;
}
footer .prev {
  float: left;
  padding-left: 10px;
}
footer .next {
  float: right;
  text-align: right;
  padding-right: 10px;
}
footer .prev::before {
  top: 10px;
  left: 2px;
  position: absolute;
  content: "";
  width: 8px;
  height: 8px;
  display: block;
  border-left: 2px solid #dbdbdb;
  border-bottom: 2px solid #dbdbdb;
  transform: rotate(45deg);
}
footer .next::after {
  top: 10px;
  right: 2px;
  position: absolute;
  content: "";
  width: 8px;
  height: 8px;
  display: block;
  border-top: 2px solid #dbdbdb;
  border-right: 2px solid #dbdbdb;
  transform: rotate(45deg);
}

.hasSide aside {
  left: 0;
  box-shadow:
    0 4px 10px 0 rgba(0, 0, 0, 0.2),
    0 4px 20px 0 rgba(0, 0, 0, 0.19);
}

@media screen and (max-device-width: 480px) {
  article .title,
  article .attr,
  article .content {
    width: 100%;
    padding-left: 8px;
    padding-right: 8px;
  }
  footer {
    padding-left: 10px;
    padding-right: 10px;
  }
}