main {
  text-align: center;
  min-height: 540px;
}
main h1 {
  color: #005826;
  font-size: 26px;
  margin: 10px 0;
}
main #time {
  color: green;
  margin: 10px;
  font-size: 16px;
}
main .text {
  text-align: left;
  font-size: 18px;
  color: #666;
}
main .text img {
  margin-left: 20%;
  width: 60%;
}
main .paper-information {
  margin: 20px 0;
  box-shadow: 0px 0px 5px #999;
  padding: 10px 0px;
  font-size: 16px;
  color: #666;
  text-align: left;
  padding: 0px 10px;
}
main .paper-information li {
  display: inline;
  padding-right: 10px;
}
main .paper-information .title {
  display: block;
  font-size: 20px;
  color: #005826;
}
main .paper-information .authors {
  color: #0c7dbb;
}
main .paper-information .link .doi::before {
  display: inline-block;
  width: 25px;
  content: 'DOI';
  background-color: #fdb425;
  border-radius: 5px;
  color: #fff;
  font-size: 12px;
  margin: 0 3px;
}
main .paper-information .link .arxiv::before {
  display: inline-block;
  text-align: center;
  width: 35px;
  content: 'arXiv';
  background-color: #b41414;
  border-radius: 5px;
  color: #fff;
  font-size: 12px;
  margin: 0 3px;
}
main .paper-information .link .pdf::before {
  display: inline-block;
  text-align: center;
  width: 35px;
  content: 'PDF';
  background-color: #da0000;
  border-radius: 5px;
  color: #fff;
  font-size: 12px;
  margin: 0 3px;
}