【css】el-tooltip设置超出滚动

.el-tooltip__popper {
  /* 设置超出滚动、隐藏箭头 */
  max-width: 520px;
  max-height: 50vh;
  overflow: auto;
  line-height: 18px;
  border: none;
  font-size: 12px;
  .popper__arrow {
    display: none;
  }
  /* 气泡 */
  padding-bottom: 18px;
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - 6px),
    calc(50% + 8px) calc(100% - 6px),
    50% 100%,
    calc(50% - 8px) calc(100% - 6px),
    0% calc(100% - 6px)
  );
}