.banner img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  
}
.card {
  padding: 30px 20px;
  box-sizing: border-box;
  width: 90%;
  margin: 20px auto;
  border: 1px solid rgb(136, 135, 135);
  border-left: 5px solid royalblue;
  box-shadow: 2px 2px 20px 2px rgba(0, 0, 0, 0.3);
}
.card .card-title {
  font-size: 35px;
}
.card .card-text {
  margin-top: 20px;
  font-size: 14px;
  color: #999;
}
#allmap {
  overflow: hidden;
  width: 100%;
  height: 400px;
  margin: 0;
  font-family: "微软雅黑";
}