:root {
  --main-color: #3fc3c7;
}
.main .ystd-banner {
  width: 640px;
  height: 350px;
  margin-bottom: 35px;
}
.main .news-box {
  width: 620px;
}
.main .news-box h3 {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  border-bottom: 1px solid #666;
  padding-bottom: 10px;
  margin-bottom: 20px;
}
.main .pagebutton {
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
}
.main .pagebutton li {
  height: 50px;
  font-size: 16px;
  line-height: 50px;
}
.main .pagebutton li a {
  padding-left: 10px;
  color: #333;
}