.container {
  background: #ededed;
  overflow: hidden;
}

.content {
  width: 76%;
  margin: 40px auto;
  height: 656px;
  background: #fff;
  display: flex;
}

.content .nav {
  width: 172px;
  height: 100%;
  background: #dcdede;
  list-style: none;
  flex-shrink: 0;
}

.content .nav li {
  line-height: 60px;
  width: 100%;
  text-align: center;
  box-sizing: border-box;
  border-bottom: 1px solid #f0f0f0;
  cursor: pointer;
  user-select: none;
}

.content .nav li.active {
  background: #ffffff;
}

.content .explain {
  list-style: none;
  box-sizing: border-box;
  padding: 40px 80px;
}

.content .explain > li {
  display: flex;
}

.content .explain > li div {
  margin-left: 50px;
}

.content .explain > li h2 {
  font-weight: bold;
  font-size: 26px;
  color: #141c20;
  margin-bottom: 40px;
}

.content .explain > li .title {
  font-weight: bold;
  font-size: 14px;
  color: #141c20;
  margin: 0;
  line-height: 36px;
}

.content .explain > li p {
  max-width: 500px;
  font-size: 14px;
  color: #8a8a8f;
  margin-top: 4px;
  margin-bottom: 40px;
  line-height: 22px;
  text-align: justify;
}

.footer1 {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 160px;
    background: #221a07;
    font-size: 14px;
    color: #ffffff;
    padding-top: 12px;
    box-sizing: border-box;
}

.footer1 .desc {
    text-align: center;
    line-height: 30px;
}

.footer1 .spe {
    color: #8a8a8f;
}

.footer1 .beian {
    display: flex;
    justify-content: center;
    align-items: center;
    > img {
        margin:0 5px 0 10px;
        position: relative;
        width: 16px;
    }
    > span {
        cursor: pointer;
    }
}