a:hover,
a:focus {
  text-underline: none;
}
#main {
  margin: 50px auto;
  width: 1000px;
}
#main > .des {
  padding-bottom: 10px;
  border-bottom: 1px solid #ddd;
}
#main > .des > .tit {
  margin-bottom: 20px;
}
#main > .des > .ap {
  margin-bottom: 30px;
  line-height: 40px;
  background-color: #f7f7f7;
  color: #777;
}
#main > .des > .ap > .author {
  margin-right: 30px;
}
#main > .des > p {
  text-indent: 2rem;
  color: #555;
  font-size: 16px;
  line-height: 40px;
}
#main > .des > img {
  margin: 20px 0;
}
#main > .navs {
  margin-top: 30px;
}
#main > .navs > div {
  line-height: 30px;
  color: #555;
}
#main > .navs > div > a {
  color: #555;
  text-decoration: none;
}
#main > .navs > div > a:hover {
  color: #3366ff;
}
.des img {
  max-width: 100%;
}