body {
  background: #f2f2f2;
}
#head {
  height: 120px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}
#head .box {
  width: 1400px;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
}
#head .box .center {
  width: 200px;
  height: 100px;
  background-size: cover;
}
#head .home {
  width: 50px;
  height: 50px;
}
#head .home img {
  width: 50px;
  height: 50px;
}
#section {
  height: 1500px;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  margin: 35px 0;
}
#section .box {
  width: 1260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
#section .box .section1 {
  height: 580px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
#section .box .section1 .co {
  width: 300px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
#section .box .section1 .det {
  height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
#section .box .section1 .det h1 {
  font-size: 25px;
  color: #FFFFFF;
}
#section .box .section1 .det h3 {
  font-size: 18px;
  color: #a6a6a6;
}
#section .box .section1 .center {
  width: 620px;
  background-size: cover;
}
#section .box .section1 .center .case {
  height: 100%;
  width: 100%;
  background-color: #010101;
  opacity: 0.2;
}
#section .box .section2 {
  height: 280px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
#section .box .section2 .co {
  width: 300px;
}
#section .box .section3 {
  height: 580px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
#section .box .section3 .co {
  width: 300px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
#section .box .section3 .co .det {
  height: 280px;
  background-size: cover;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
}
#section .box .section3 .co .det h1 {
  font-size: 35px;
  font-weight: 700;
}
#section .box .section3 .right {
  width: 620px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
#section .box .section3 .right .case {
  height: 220px;
  width: 500px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  text-align: center;
}
#section .box .section3 .right .case h1 {
  font-size: 32px;
  font-weight: 600;
  color: #FFFFFF;
}
#section .box .section3 .right .case p {
  font-size: 20px;
  text-indent: 20px;
  line-height: 30px;
  color: #FFFFFF;
}