* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul li {
  list-style: none;
}
ul li a {
  text-decoration: none;
}
header {
  position: sticky;
  top: 0;
  z-index: 9;
}
#container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: #f5f5f5;
}
#container #nav {
  width: 60rem;
  margin: 0 auto;
  text-align: center;
}
#container #header {
  position: sticky;
  top: 0;
  z-index: 9;
}
#container .banner {
  margin-bottom: 1.875rem;
  position: relative;
}
#container .banner .image {
  width: 100%;
  overflow: hidden;
}
@media (max-width: 500px) {
  #container .banner .image {
    transition: 0.3s;
    width: 100%;
    height: 172px;
    overflow: hidden;
  }
}
#container .banner .img-word {
  position: absolute;
  top: 30%;
  left: 10%;
  color: #fff;
  width: 40%;
}
#container .banner .img-word .word-en {
  margin-bottom: 20px;
  font-size: 18px;
  font-family: Source Han Sans CN;
}
#container .banner .img-word .word-content {
  line-height: 2rem;
  font-size: 16px;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-line-clamp: 4;
  display: -webkit-box;
  -webkit-box-orient: vertical;
}
@media (max-width: 500px) {
  #container .banner .img-word {
    position: absolute;
    top: 20%;
    left: 10%;
    color: #fff;
    width: 40%;
  }
  #container .banner .img-word .word-title {
    font-size: 16px;
    font-weight: bold;
  }
  #container .banner .img-word .word-en {
    margin-bottom: 5px;
    font-size: 12px;
    font-family: Source Han Sans CN;
  }
  #container .banner .img-word .word-content {
    line-height: 1rem;
    font-size: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-line-clamp: 4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
  }
}
#container #content {
  width: 80%;
  margin: 0 auto;
}
#container #content .download {
  margin: 0 auto;
  text-align: center;
}
#container #content .download .top {
  text-align: left;
}
#container #content .download .long-line {
  position: relative;
  height: 0.3125rem;
  background-color: #ccc;
  width: 100%;
  margin-bottom: 1.875rem;
}
#container #content .download .long-line::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 8%;
  height: 100%;
  background-color: #D20111;
}
#container #content .download .long-line::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 92%;
  height: 100%;
  background-color: #BCBCBC;
}
#container #content .download .show-tabs {
  margin-bottom: 20px;
}
#container #content .download .show-tabs .tabs {
  display: flex;
  width: 100%;
}
#container #content .download .show-tabs .tabs .tab {
  width: 33%;
  padding: 10px;
  border: 1px solid #DADADA;
  text-align: center;
  cursor: pointer;
}
#container #content .download .show-tabs .tabs .is-active {
  background-color: #D20111;
  color: #fff;
}
#container #content .download .show-tabs .tab-contents {
  padding-top: 20px;
}
#container #content .download .show-tabs .tab-content {
  display: none;
  width: 100%;
}
#container #content .download .show-tabs .tab-content .tab-list {
  display: flex;
  margin: 20px 0;
  width: 45%;
}
#container #content .download .show-tabs .tab-content .tab-list .tab-img {
  margin-right: 10px;
}
#container #content .download .show-tabs .tab-content .tab-list .tab-img .image {
  width: 180px;
  height: 140px;
  border-radius: 10px;
  box-shadow: 1px 3px 5px 0px rgba(35, 35, 35, 0.15);
}
#container #content .download .show-tabs .tab-content .tab-list .tab-word {
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 50%;
}
#container #content .download .show-tabs .tab-content .tab-list .tab-word .time {
  font-size: 16px;
  color: #8B0000;
}
#container #content .download .show-tabs .tab-content .tab-list .tab-word .important {
  color: #8B0000;
  font-weight: 700;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  display: -webkit-box;
  overflow: hidden;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}
#container #content .download .show-tabs .tab-content .tab-list .tab-word .tips {
  font-size: 11px;
  color: #747474;
  font-weight: 300;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  display: -webkit-box;
  overflow: hidden;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}
#container #content .download .show-tabs .tab-content .tab-list .tab-word .more {
  font-weight: 700;
  color: #8B0000;
}
@media (max-width: 850px) {
  #container #content .download .show-tabs .tab-content .tab-list {
    display: flex;
    margin: 20px 0;
    width: 100%;
  }
  #container #content .download .show-tabs .tab-content .tab-list .tab-img {
    margin-right: 10px;
  }
  #container #content .download .show-tabs .tab-content .tab-list .tab-img .image {
    width: 125px;
    height: 140px;
    border-radius: 10px;
    box-shadow: 1px 3px 5px 0px rgba(35, 35, 35, 0.15);
    object-fit: fill;
  }
  #container #content .download .show-tabs .tab-content .tab-list .tab-word {
    width: 100%;
  }
}
#container #content .download .show-tabs .tab-content.active {
  display: block;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  width: 100%;
}
#container #footer {
  margin-top: auto;
}
@media (max-width: 68.75rem) {
  #container #footer {
    transition: 0.3s;
    display: none;
  }
  #container #rightside {
    transition: 0.3s;
    display: none;
  }
}
footer {
  margin-top: auto;
}
@media (max-width: 68.75rem) {
  footer {
    transition: 0.3s;
    display: none;
  }
  #rightside {
    transition: 0.3s;
    display: none;
  }
}