maestro-server/bootue

<span ref="trigger">
    <slot></slot>
    <transition :name="effect">
      <div ref="popover" v-if="show" :class="['popover',placement]">
        <div class="arrow"></div>
        <h3 class="popover-title" v-if="title"><slot name="title">{{title}}</slot></h3>
        <div class="popover-content"><slot name="content"><span v-html="content"></span></slot></div>
      </div>
    </transition>
  </span>