.layout {
  width: 1200px;
  margin: 0 auto;
}
html,
body {
  font-family: arial, 'Microsoft Yahei', '微软雅黑';
  font-size: 16px;
  background-color: #f5f5f5!important;
}
/* 导航 */
.banner {
  width: 100%;
  height: 500px;
  background-image: url(/images/jzn_erji/banner.jpg);
  background-position: center center;
}
/* 标题 */
.main-title {
  width: 100%;
  height: 100px;
  background-color: #fff;
}
.main-title .layout {
  width: 650px;
  height: 100%;
  display: flex;
  margin: 0 auto;
  justify-content: space-between;
  align-items: center;
}
.main-title a {
  margin-top: 40px;
  height: 60px;
  color: #000000;
  font-size: 18px;
}
.main-title .active {
  color: #2589ff;
  border-bottom: 1px solid #2589ff;
}
/* 主题内容 */
.develop {
  margin-top: 66px;
  padding-bottom: 60px;;
}
.develop .title {
  width: 355px;
  height: 60px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.develop .title .line {
  width: 75px;
  height: 1px;
  background-color: #999999;
  margin-bottom: 29px;
}
.develop .title .content {
  height: 100%;
  display: flex;
  flex-direction: column;
  text-align: center;
  justify-content: space-between;
}
.develop .title .content h3 {
  font-size: 28px;
}
.develop .title .content p {
  font-size: 10px;
  color: #7e7e7e;
}
.develop .develop-content {
  width: 1213px;
  height: 1135px;
  background-image: url(/images/jzn_erji/beijing3.png);
  margin: 0 auto;
  margin-top: 70px;
}
.develop .develop-content .contentBox {
  width: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding-top: 5px;
  margin-bottom: 106px;
}
.develop .develop-content .contentBox .contentBox1 {
  width: 166px;
  margin: 0 37px;
  height: 50px;
  border-radius: 25px;
  background-color: #2589ff;
  text-align: center;
  line-height: 50px;
  color: #fff;
  font-size: 18px;
  margin-bottom: 25px;
  cursor: pointer;
}
.develop .develop-content .contentBox .contentBox2 {
  font-size: 16px;
  width: 240px;
}
.develop .develop-content .contentBox .contentBox2 .develop-date {
  width: 100%;
  text-align: center;
}
.develop .develop-content .contentBox .contentBox2 .develop-img {
  text-align: center;
  margin: 30px auto 23px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background-color: #2589ff;
  position: relative;
}
.develop .develop-content .contentBox .contentBox2 .develop-img:after {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  background-color: #2589ff;
  border-radius: 50%;
  opacity: .5;
  animation: scale 1.5s infinite;
}
.develop .develop-content .contentBox .contentBox2 .develop-text {
  color: #242424;
  line-height: 28px;
}
.develop .develop-content .contentBox:nth-child(2),
.develop .develop-content .contentBox:nth-child(3),
.develop .develop-content .contentBox:nth-child(4) {
  margin-bottom: 76px;
}
.develop .develop-content .contentBox:nth-child(2) .contentBox1,
.develop .develop-content .contentBox:nth-child(3) .contentBox1,
.develop .develop-content .contentBox:nth-child(4) .contentBox1 {
  margin-bottom: 60px;
}
.develop .develop-content .contentBox:nth-child(5) {
  justify-content: flex-start;
  margin-left: 35px;
}
@keyframes scale {
  0% {
    opacity: .7;
    transform: scale(1);
  }
  100% {
    opacity: .0;
    transform: scale(2.5);
  }
}