body {
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif;
}

.topbar .container::after,
.navbar .container::after,
.navbar-header::after {
  display: none;
}

.topbar a {
  display: inline-block;
}

.navbar {
  min-height: 64px;
  margin-bottom: 0;
  border: 0;
}

.navbar-nav {
  float: none;
  margin: 0;
}

.navbar-nav > .nav-item > .nav-link {
  padding: 1rem;
}

.dropdown-menu {
  min-width: 14rem;
}

#main-slider {
  position: relative;
  overflow: hidden;
}

#main-slider > img {
  display: block;
  object-fit: cover;
}

.breadcrumb > li {
  display: list-item;
}

.breadcrumb > li + li::before {
  content: none;
}

.breadcrumb > li:not(:last-child)::after {
  content: "/";
  padding: 0 .5rem;
  color: #6c757d;
}

.modal-dialog {
  max-width: min(900px, calc(100vw - 2rem));
}

.modal-content,
.modal-body img {
  max-width: 100%;
}

.table-responsive {
  overflow-x: auto;
}

.btn-fix {
  margin-top: 1rem;
}

#scrollUp {
  cursor: pointer;
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    max-height: calc(100vh - 90px);
    overflow-y: auto;
  }

  .navbar-nav > .nav-item > .nav-link {
    padding: .75rem 0;
  }

  .dropdown-menu {
    border: 0;
    padding-left: 1rem;
  }
}