<div class="title"><span>基础信息</span>
</div>
css"> .title {position: relative;height: 40px;line-height: 40px;&::after {content: "";position: absolute;left: 0;bottom: 0;width: 100%;height: 2px;background-color: #f2f4fe;}span {display: inline-block;position: relative;padding: 0px 5px;font-size: 18px;color: #3d3d3d;&::after {content: "";position: absolute;left: 0;bottom: 0;width: 100%;height: 2px;background-color: #409eff;z-index: 1;}}}