/* Popover 插件样式 */
.popover {
  position: absolute;
  z-index: 9999;
  max-width: 320px;
  min-width: 60px;
  padding: 10px;
  background: #2b2b2b;
  color: #fff;
  font-size: 13px;
  line-height: 1.5;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .18);
  opacity: 0;
  visibility: hidden;
  transform: translateZ(0);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  pointer-events: none;
  word-wrap: break-word;
}

.popover.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* 方向入场动效 */
.popover-top.show    { transform: translateY(4px); }
.popover-bottom.show { transform: translateY(-4px); }
.popover-left.show   { transform: translateX(4px); }
.popover-right.show  { transform: translateX(-4px); }

/*.popover-content { display: inline-block; }*/

/* 小箭头 */
.popover-arrow {
  position: absolute;
  width: 0;
  height: 0;
  border: 6px solid transparent;
}

.popover-top .popover-arrow {
  bottom: -12px;
  left: 50%;
  margin-left: -6px;
  border-top-color: #2b2b2b;
}

.popover-bottom .popover-arrow {
  top: -12px;
  left: 50%;
  margin-left: -6px;
  border-bottom-color: #2b2b2b;
}

.popover-left .popover-arrow {
  right: -12px;
  top: 50%;
  margin-top: -6px;
  border-left-color: #2b2b2b;
}

.popover-right .popover-arrow {
  left: -12px;
  top: 50%;
  margin-top: -6px;
  border-right-color: #2b2b2b;
}