图片居中

Posted 2020-10-22 且听风吟V

       position: absolute;
        bottom: .3rem;
        left: 50%;
        margin-left: unit(-5.2/2,rem);
        width: 5.2rem;
        height: 3.6rem;
        background: url("../img/zf_phoneListen.png") no-repeat;
        background-size: 100% 100%;