.container .top-banner {
  background: url("../../images/course3/1.jpg") no-repeat center;
  height: 700px;
  color: #fff;
  padding: 1px;
}
.container .top-banner h2 {
  font-size: 57px;
  font-weight: bold;
  margin-top: 250px;
}
.container .top-banner h3 {
  margin-top: 20px;
  font-size: 57px;
}
.container .top-banner h4 {
  margin-top: 20px;
  font-size: 36px;
  color: #fff;
}
.container .top-banner .i-button {
  width: 120px;
  height: 42px;
  background: #3f8af6;
  border-radius: 20px;
  text-align: center;
  line-height: 42px;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  margin-top: 40px;
}
.container .top-banner .i-button:nth-of-type(2) {
  margin-left: 15px;
}
.container .course3 .c3-block1 .block1-item {
  display: flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  justify-content: center;
}
.container .course3 .c3-block1 .block1-item .item {
  width: 300px;
  height: 284px;
  padding: 70px 75px 40px 75px;
  box-sizing: border-box;
  text-align: center;
  border: 1px solid #eee;
  position: relative;
  background: #fff;
}
.container .course3 .c3-block1 .block1-item .item .iconfont {
  display: block;
  height: 45px;
  margin-bottom: 67px;
  font-size: 55px;
  text-align: center;
  color: #4286f3;
}
.container .course3 .c3-block1 .block1-item .item h2 {
  margin: 0 auto;
  font-size: 24px;
  color: #3b3b3b;
  line-height: 30px;
}
.container .course3 .c3-block1 .block1-item .item p {
  color: #57565d;
  margin-top: 35px;
}
.container .course3 .c3-block1 .block1-item .item:hover {
  transform: scale(1.05);
  border-top: 5px solid #4286f3;
  box-shadow: 0 0 10px 1px #eee;
  z-index: 1;
}
.container .course3 .c3-block1 p {
  width: 520px;
  margin: 80px auto 0;
  line-height: 28px;
}
.container .course3 .c3-block1 img {
  display: block;
  width: 843px;
  margin: 70px auto 0;
}
.container .course3 .c3-block2 .bounce-top {
  position: relative;
  width: 370px;
  height: 657px;
  margin: 90px auto 0;
  background: url("../../images/course3/float/c.png") no-repeat center;
  background-size: 100% 100%;
}
.container .course3 .c3-block2 .bounce-top img {
  width: 269px;
  height: 74px;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(1) {
  position: absolute;
  top: 0;
  right: 100%;
  -webkit-animation: vertical1 1.5s linear 0.3s infinite alternate;
  animation: vertical1 1.5s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(2) {
  position: absolute;
  top: 0;
  left: 102%;
  -webkit-animation: vertical1 1.8s linear 0.3s infinite alternate;
  animation: vertical1 1.8s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(3) {
  position: absolute;
  top: 25%;
  right: 118%;
  -webkit-animation: vertical1 1.3s linear 0.3s infinite alternate;
  animation: vertical1 1.3s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(4) {
  position: absolute;
  top: 25%;
  left: 121%;
  -webkit-animation: vertical1 1.1s linear 0.3s infinite alternate;
  animation: vertical1 1.1s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(5) {
  position: absolute;
  top: 47%;
  right: 118%;
  -webkit-animation: vertical1 2s linear 0.3s infinite alternate;
  animation: vertical1 2s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(6) {
  position: absolute;
  top: 47%;
  left: 121%;
  -webkit-animation: vertical1 2s linear 0.3s infinite alternate;
  animation: vertical1 2s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(7) {
  position: absolute;
  top: 68%;
  right: 100%;
  -webkit-animation: vertical1 1.7s linear 0.3s infinite alternate;
  animation: vertical1 1.7s linear 0.3s infinite alternate;
}
.container .course3 .c3-block2 .bounce-top img:nth-of-type(8) {
  position: absolute;
  top: 68%;
  left: 102%;
  -webkit-animation: vertical1 2.4s linear 0.3s infinite alternate;
  animation: vertical1 2.4s linear 0.3s infinite alternate;
}
@keyframes vertical1 {
  0% {
    -webkit-transform: translate(0, 0);
    -ms-transform: translate(0, 0);
    transform: translate(0, 0);
    opacity: 0.5;
  }
  50% {
    opacity: 0.8;
  }
  100% {
    -webkit-transform: translate(0, 50px);
    -ms-transform: translate(0, 50px);
    transform: translate(0, 50px);
    opacity: 1;
  }
}
.container .course3 .c3-block2 .b2-bot {
  margin-top: 150px;
}
.container .course3 .c3-block2 .b2-bot .bot-left {
  margin-left: 95px;
  margin-right: 40px;
  width: 470px;
}
.container .course3 .c3-block2 .b2-bot .bot-left .title {
  font-size: 30px;
  color: #3b3b3b;
}
.container .course3 .c3-block2 .b2-bot .bot-left .blue-line:before {
  position: relative;
  left: 12px;
}
.container .course3 .c3-block2 .b2-bot .bot-left p {
  margin-top: 66px;
  color: #48464d;
  margin-bottom: 70px;
  line-height: 28px;
}
.container .course3 .c3-block2 .b2-bot .bot-right {
  width: 682px;
  height: 384px;
  margin-right: 60px;
}
.container .course3 .c3-block3 p {
  width: 600px;
  margin: 0 auto;
  color: #48464d;
  text-align: center;
  line-height: 28px;
}
.container .course3 .c3-block3 .block3-title {
  font-size: 22px;
  color: #3b3b3b;
  text-align: center;
  margin-top: 100px;
  margin-bottom: 55px;
}
.container .course3 .c3-block3 .block3-title .iconfont {
  display: inline-block;
  font-size: 32px;
  color: #4286f3;
  position: relative;
  top: 3px;
  left: -4px;
}
.container .course3 .c3-block3 ul {
  display: flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  justify-content: center;
}
.container .course3 .c3-block3 ul li {
  margin: 0 10px;
}
.container .course3 .c3-block4 .block4-title {
  font-size: 22px;
  color: #3b3b3b;
  text-align: center;
  margin-top: 60px;
  margin-bottom: 55px;
}
.container .course3 .c3-block4 .block4-title .iconfont {
  display: inline-block;
  font-size: 32px;
  color: #4286f3;
  position: relative;
  top: 3px;
  left: -4px;
}
.container .course3 .c3-block4 .c3-banner1 {
  width: 1360px;
  height: 268px;
}
.container .course3 .c3-block4 .c3-banner1 .swiper-wrapper .swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
  transform: scale(1.1);
}
.container .course3 .c3-block4 .c3-banner1 .swiper-wrapper .swiper-slide:hover {
  transform: scale(1.16);
}
.container .course3 .c3-block4 .c3-banner1 .swiper-wrapper .swiper-slide span {
  width: 260px;
  height: 45px;
  line-height: 45px;
  border-radius: 8px;
  color: #fff;
  opacity: 0.5;
  background: linear-gradient(to left, #000, #000, #fff);
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -130px;
  margin-top: -22.5px;
}
.container .course3 .c3-block4 .c3-banner1 .swiper-button-prev {
  width: 66px;
  height: 66px;
  background: #3199fa;
  border-radius: 50%;
}
.container .course3 .c3-block4 .c3-banner1 .swiper-button-prev:before {
  content: "";
  display: inline-block;
  position: absolute;
  left: 12px;
  top: 23px;
  border: 18px dashed #fff;
  transform: rotate(-90deg);
  border-bottom-style: solid;
  border-top: 0;
  border-left-color: transparent;
  border-right-color: transparent;
}
.container .course3 .c3-block4 .c3-banner1 .swiper-button-next {
  width: 66px;
  height: 66px;
  background: #3199fa;
  border-radius: 50%;
}
.container .course3 .c3-block4 .c3-banner1 .swiper-button-next:before {
  content: "";
  display: inline-block;
  position: absolute;
  left: 20px;
  top: 24px;
  border: 18px dashed #fff;
  transform: rotate(90deg);
  border-bottom-style: solid;
  border-top: 0;
  border-left-color: transparent;
  border-right-color: transparent;
}
.container .course3 .c3-block4 .c3-bot {
  margin: 130px 15px 0;
}
.container .course3 .c3-block4 .c3-bot .bot-left .item {
  width: 638px;
  padding: 15px;
  box-sizing: border-box;
  margin-bottom: 25px;
}
.container .course3 .c3-block4 .c3-bot .bot-left .item p {
  color: #3b3b3b;
  line-height: 27px;
}
.container .course3 .c3-block4 .c3-bot .bot-left .item p span {
  color: #4286f3;
}
.container .course3 .c3-block4 .c3-bot .bot-left .item:hover {
  background: #4286f3;
}
.container .course3 .c3-block4 .c3-bot .bot-left .item:hover p {
  color: #fff;
}
.container .course3 .c3-block4 .c3-bot .bot-left .item:hover p span {
  color: #fff;
}
.container .course3 .c3-block4 .c3-bot .bot-right {
  position: relative;
  width: 310px;
  height: 639px;
}
.container .course3 .c3-block4 .c3-bot .bot-right .phone-frame {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 9;
}
.container .course3 .c3-block4 .c3-bot .bot-right .phone-bg {
  position: absolute;
  z-index: 8;
}
.container .course3 .c3-block4 .c3-bot .bot-right .phone-bg img {
  position: absolute;
  left: 18px;
  top: 76px;
  width: 274px;
  z-index: 0;
}
.container .course3 .c3-block4 .c3-bot .bot-right .phone-bg img:nth-child(2) {
  z-index: 1;
}
.container .course3 .c3-block5 .block5-left {
  margin-left: 60px;
}
.container .course3 .c3-block5 .block5-right {
  width: 536px;
  margin-left: 680px;
}
.container .course3 .c3-block5 .block5-right img {
  display: block;
  margin-bottom: 104px;
}
.container .course3 .c3-block5 .block5-right p {
  color: #3b3b3b;
  line-height: 30px;
  font-size: 18px;
}
.container .course3 .c3-block6 ul {
  width: 1155px;
  height: 215px;
  margin: 0 auto 187px;
  background-color: #f0f0f0;
}
.container .course3 .c3-block6 ul li {
  position: relative;
  float: left;
  width: 288px;
  height: 108px;
  margin-right: 1px;
  box-sizing: border-box;
}
.container .course3 .c3-block6 ul li:nth-of-type(4n + 4) {
  margin-right: 0;
}
.container .course3 .c3-block6 ul li:hover {
  transform: scale(1.02, 1.01);
  border-top: 4px solid #4286f3;
  box-shadow: 0 11px 35px 0 rgba(0, 0, 0, 0.08);
  z-index: 1;
}