.el-input.el-input--small.el-input-group.el-input-group--prepend:nth-child(1):before{content:'输入QQ号会自动获取昵称和头像🐧'}.el-input.el-input--small.el-input-group.el-input-group--prepend:nth-child(2):before{content:'收到回复将会发送到您的邮箱📧'}.el-input.el-input--small.el-input-group.el-input-group--prepend:nth-child(3):before{content:'可以通过昵称访问您的网站🔗'}.el-input.el-input--small.el-input-group.el-input-group--prepend:focus-within::after,.el-input.el-input--small.el-input-group.el-input-group--prepend:focus-within::before{display:block}.el-input.el-input--small.el-input-group.el-input-group--prepend::before{display:none;position:absolute;top:-60px;white-space:nowrap;border-radius:10px;left:50%;transform:translate(-50%);padding:14px 18px;background:#444;color:#fff}.el-input.el-input--small.el-input-group.el-input-group--prepend::after{display:none;content:'';position:absolute;border:12px solid transparent;border-top-color:#444;left:50%;transform:translate(-50%,-48px)}