* {
  margin: 0;
  padding: 0;
}

body {
  overflow-x: hidden;
  width: 100vw;
  height: 100vh;
}

/* 顶部导航 */
header {
  width: 80vw;
  margin: 0 auto;

  nav {
    width: 1500px;
    height: 50px;
    text-align: center;
    margin: 10px auto;
    display: flex;
    justify-content: space-around;

    a {
      text-decoration: none;
      color: #4e4e4e;
      font-size: 16px;
      font-weight: 600;
    }
  }
}

nav a:nth-child(1) {
  margin-top: 5px;
}

nav a:nth-child(2),
a:nth-child(3) {
  margin-top: 15px;
}

.Bpu,
#puC {
  margin: 0 auto;
}

/* 中间banner */
.midpuC {
  display: block;
  background-image: url(../img/pcimg/2banner.jpeg);
  height: 700px;
  background-size: cover;
}

/* 产品部分 */
#Pscd {
  width: 1300px;
  height: 1250px;
  margin: 0 auto;
}

#Pscd .one {
  width: 1200px;
  height: 400px;
  display: flex;
  justify-content: space-between;
}

#Pscd .one .pslef {
  width: 600px;
  height: 400px;
  ;
  background-image: url(../img/PI/CMS/cms.jpg);
}

#Pscd .one .psrigh {
  width: 600px;
  height: 300px;
  margin: 40px 20px 0px;
}

#Pscd .one .psrigh p {
  line-height: 25px;
  font-size: 14px;
}

#Pscd .one .psrigh button {
  width: 600px;
  height: 50px;
  display: block;
  margin: 0 auto;
  font-size: 16px;
  border-style: none;
  letter-spacing: 2px;
  color: #4e4e4e;
  background-color: #f3f3f3;
}

#Pscd .one .psrigh button:hover {
  background-color: #5aa3fa;
  cursor: pointer;
}

#Pscd .one .psrigh p:first-child {
  color: #5aa3fa;
  font-size: 24px;
  font-weight: 600;
}

#Pscd .one .psrigh p:nth-child(2) {
  color: #bfbfbf;
  font-size: 12px;
  margin-bottom: 10px;
}

#Pscd .one .psrigh p:nth-child(3) {
  color: #666;
}

/* 心康360 */
#Pscd .one:nth-child(2) .pslef2 {
  width: 500px;
  height: 400px;
  background-image: url(../img/PI/360/xK360.jpeg);
  background-size: 400px 300px;
  background-repeat: no-repeat;
  background-position: center;
}

/* 运动负荷试验测试仪 */
#Pscd .one:nth-child(3) .pslef2 {
  width: 500px;
  height: 400px;
  background-image: url(../img/PI/PC/BSD-EC200.jpg);
  background-size: 350px 350px;
  background-repeat: no-repeat;
  background-position: center;
}

/* 六分钟步行试验测试系统 */
#Pscd .one:nth-child(4) .pslef2 {
  width: 500px;
  height: 400px;
  background-image: url(../img/PI/liufenZ/taiChe.png);
  background-size: 350px 400px;
  background-repeat: no-repeat;
  background-position: center;
  margin-top: 10px;
}

/* CRS心肺评估训练系统 */
#Pscd .one:nth-child(5) {
  margin-top: 300px;
}

#Pscd .one:nth-child(5) .pslef2 {
  width: 500px;
  height: 400px;
  background-image: url(../img/PI/CRS/CRSxin.png);
  background-size: 350px 300px;
  background-repeat: no-repeat;
  background-position: center;
}

/* 运动负荷检测系统 */
#Pscd .one:nth-child(6) .pslef2 {
  width: 500px;
  height: 400px;
  background-image: url(../img/PI/detect/ergoselect_1200_schraeg_01\(1\).jpg);
  background-size: 350px 400px;
  background-repeat: no-repeat;
  background-position: center;
  margin-top: 10px;
}


/* 结尾部分 */
#dib {
  margin-top: 1550px;
}