hr.no-line {
    border-width: 0px;
    margin-top: 20px;
    margin-bottom: 20px;
}
hr.no-line-sm {
    border-width: 0px;
    margin-top: 10px;
    margin-bottom: 10px;
}
img {
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
div#mapbox {
    width: 100%;
    height: 100vh;
    transition: width .3s;
}
div.cb-horizontal {
    width: 300px;
    top: calc(100vh - 50px - 150px);
}
div.cb-vertical {
    width: 95px;
    top: calc(33vh - 50px);
}
/* 限高+滚动条 */
.dropdown-menu-scroll {
  max-height: 60vh;      /* 视口 60% 高度 */
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch; /* 移动端顺滑 */
}

/* 多列布局（自动分列） */
.dropdown-menu-cols {
  column-width: 10rem;   /* 每列最小宽度，可按需调整 */
  column-gap: .5rem;
  padding: .5rem;        /* 让内容不顶边 */
}

.dropdown-menu-cols li {
  break-inside: avoid;   /* 避免同一项被拆列 */
}

/* 让条目更紧凑 */
.dropdown-item {
  white-space: nowrap;   /* 如果想允许换行可改为 normal */
  line-height: 1.2;
  padding: .35rem .75rem;
}