/*密码强度*/
    .pw-strength {
        clear: both;
        position: relative;
        top: 8px;
        width: 180px;
    }

    .pw-bar {
        background: url(/res/mobile_images/pwd-1.png) no-repeat;
        height: 14px;
        overflow: hidden;
        width: 179px;
    }

    .pw-bar-on {
        background: url(/res/mobile_images/pwd-2.png) no-repeat;
        width: 0px;
        height: 14px;
        position: absolute;
        top: 1px;
        left: 2px;
        transition: width .5s ease-in;
        -moz-transition: width .5s ease-in;
        -webkit-transition: width .5s ease-in;
        -o-transition: width .5s ease-in;
    }

    .pw-weak .pw-defule {
        width: 0px;
    }

    .pw-weak .pw-bar-on {
        width: 60px;
    }

    .pw-medium .pw-bar-on {
        width: 120px;
    }

    .pw-strong .pw-bar-on {
        width: 179px;
    }

    .pw-txt {
        padding-top: 2px;
        width: 180px;
        overflow: hidden;
    }

        .pw-txt span {
            color: #707070;
            float: left;
            font-size: 12px;
            text-align: center;
            width: 58px;
        }