a {
  color: #fff;
  text-decoration: none;
}

.index {
  text-align: center;
}

.index .i-hd {
  border: 1px solid #fff;
}

.index .i-hd a:hover {
  color: #fff;
  text-decoration: underline;
}

.index .i-hd-title {
  font-size: 42px;
  line-height: 1.7;
  letter-spacing: 2px;
  margin: 80px auto 40px;
}

.index .i-hd-tab {
  position: relative;
  display: inline-block;
  padding: 6px 12px;
  margin: 16px 12px;
  color: #fff;
  cursor: pointer;
  font-size: 16px;
}

.index .i-hd-tab.active,
.index .i-hd-tab:hover {
  background: #fff;
  color: #0084ff;
}

.index .i-hd-tab.active::after,
.index .i-hd-tab:hover::after {
  position: absolute;
  left: 30%;
  bottom: -8px;
  content: '';
  width: 0;
  height: 0;
  border-top: 8px solid #fff;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
}

.index .i-hd-tab-container {
  display: none;
  margin: 0 auto;
}

@media screen and (min-width: 1200px) {
  .index .i-hd-tab-container {
    width: 900px;
  }
}

@media screen and (min-width: 960px) and (max-width: 1199px) {
  .index .i-hd-tab-container {
    width: 800px;
  }
}

@media screen and (min-width: 600px) and (max-width: 959px) {
  .index .i-hd-tab-container {
    width: 500px;
  }
}

@media screen and (max-width: 599px) {
  .index .i-hd-tab-container {
    width: 80%;
  }
}

.index .i-hd-tab-container.active {
  display: block;
}

.index .i-hd-form {
  position: relative;
  width: 100%;
  margin: 0 auto;
}

.index .i-hd-form .form-control {
  display: inline-block;
  height: 44px;
  line-height: 44px;
  padding: 0 16px;
  font-size: 16px;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

.index .i-hd-form input {
  width: 100%;
  padding: 0 100px 0 10px;
}

.index .i-hd-form button {
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  color: #0084ff;
}

.index .i-hd-word {
  width: 100%;
  text-align: left;
  margin: 30px auto 0;
  height: 44px;
  overflow: hidden;
}

.index .i-hd-word div {
  float: left;
  width: 44px;
  height: 44px;
  padding: 5px;
  border: 1px solid #fff;
  line-height: 16px;
  background: rgba(255, 255, 255, 0.1);
  margin-right: 10px;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-size: 14px;
  text-align: center;
}

.index .i-hd-word span {
  font-size: 14px;
  line-height: 24px;
  margin-right: 10px;
  display: inline-block;
}

.slContainer {
  padding: 50px 0;
}

@media screen and (max-width: 599px) {
  .slContainer {
    display: none;
  }
}

.slContainer > p {
  font-size: 28px;
  font-weight: 400;
}

.slContainer a {
  color: #666;
}

.slContainer ul {
  margin: 0 auto;
}

@media screen and (min-width: 1200px) {
  .slContainer ul {
    width: 1200px;
  }
}

@media screen and (min-width: 960px) and (max-width: 1199px) {
  .slContainer ul {
    width: 900px;
  }
}

@media screen and (min-width: 600px) and (max-width: 959px) {
  .slContainer ul {
    width: 100%;
  }
}

.slContainer ul li {
  width: 270px;
  margin: 1%;
  border: 1px solid #eee;
  background-image: url(https://images.threelion.cn/schools/recommend_back.png);
  background-size: 100% 100%;
  vertical-align: top;
}

@media screen and (min-width: 1200px) {
  .slContainer ul li {
    width: 23%;
  }
}

.slContainer ul li:hover {
  -webkit-box-shadow: 0 0 10px 2px #eee;
          box-shadow: 0 0 10px 2px #eee;
}

.i-sl-list {
  width: 220px;
  margin: 20px auto;
  padding: 20px 0;
  height: 300px;
}

.i-sl-logo {
  max-width: 80px;
  max-height: 80px;
}

.i-sl-name {
  margin: .6rem 0 .2rem;
}

.i-sl-imgList {
  width: 80%;
  margin: 0 auto;
  border-top: 2px solid #eee;
}

.i-sl-img {
  width: 72px;
  margin: 2%;
  border: 1px solid #eee;
  height: 72px;
}