如何修改工具提示组件的font-size/style？

<div class="tooltip">
  Hover over me
  <span class="tooltiptext">This is a tooltip</span>
</div>

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: black;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 125%; /* Position the tooltip above the text */
  left: 50%;
  margin-left: -60px; /* Use half of the width to center the tooltip */
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

/* 修改字体大小和样式 */
.tooltip .tooltiptext {
  font-size: 14px; /* 修改字体大小 */
  font-family: Arial, sans-serif; /* 修改字体样式 */
  text-decoration: underline; /* 添加下划线 */
}