.picture_lts{display:flex;position:fixed;bottom:4.8rem;right:.24rem;z-index:101}.help-wrap{height:100vh;background:#fff;padding:0 0 .3rem;box-sizing:border-box}.help-wrap h4{font-size:.28rem;margin-bottom:.3rem;padding:0 .24rem}.help-wrap p{font-size:.24rem;margin-bottom:.4rem;padding:0 .24rem}