@media only screen and (max-width: 767px) {
  .page-title h2 {
    font-size: 25px;
  }
  .about-text h3 {
    font-size: 17px;
  }
  .about-text p {
    font-size: 15px;
  }
  .about-data ul li p {
    font-size: 14px;
  }
  .modal.show .modal-dialog {
    top: 10px;
    margin-top: 0;
  }
  .carousel-caption {
    bottom: 10%;
    left: 0%;
    right: auto;
    text-align: center;
    max-width: 600px;
    z-index: 2;
    padding: 15px;
  }
  /* banner */
  .carousel,
  .carousel-inner,
  .carousel-item {
    height: 100vh;
  }

  /* 普通图片 */
  .carousel-item img {
    width: 100%;
    height: 100vh;
    object-fit: cover;
    filter: brightness(0.75);
  }
}
@media only screen and (min-width: 576px) and (max-width: 767px) {
}
@media only screen and (min-width: 768px) and (max-width: 991px) {
  .carousel-caption {
    bottom: 30%;
    left: 14%;
    right: auto;
    text-align: left;
    max-width: 600px;
    z-index: 2;
  }
}
@media only screen and (min-width: 992px) and (max-width: 1199px) {
  .navbar-expand-lg .navbar-nav .nav-link {
    padding: 15px 25px !important;
  }
  .carousel-caption {
    bottom: 34%;
    left: 12%;
    right: auto;
    text-align: left;
    max-width: 400px;
    z-index: 2;
  }
}