.header {
    position: relative;
    background: url("../img/bikan_img/sub_bikan_pc.jpg") no-repeat center center;

    background-size: cover;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
}
.header h1, .hero p {
    position: relative;
    z-index: 2;
    color: #fff;
}
.header h1 {
    font-size: 3.2rem;
    font-weight: bold;
}
.header p {
  font-size: 1.5rem;
}
.bikan_map {
  width: 100%;
}
.map_title {
  text-align: center;
  font-weight: bold;
  margin-bottom: 30px;
  border-top: 2px solid rgb(14, 231, 213);
  border-bottom: 2px solid rgb(14, 231, 213);
  padding: 10px;
}