html, body {
    margin: 0px;
    padding: 0px;
    width: 100%;
    height: 100%;
}

body {
    background: #227aeb ;
    text-align: center;
}

.loginkj {
    clear: both;
    position: relative !important;
    width: 497px;
    height: 551px;
    background: url(loginbjt.png) no-repeat;
    margin: auto;
    top: 50%;
    margin-top: -275px;
}

    .loginkj .bt {
        float: left;
        width: 100%;
        height: 203px;
    }

    .loginkj input.srk {
        float: left;
        width: 300px;
        height: 30px;
        margin: 35px 0 0 125px;
        border: 0px;
        font-size: 16px;
        font-family: "microsoft yahei";
        color: #A1A1A1;
        text-indent: 0.5em;
    }

    .loginkj input.tjk {
        float: left;
        width: 365px;
        height: 50px;
        margin: 55px 0 30px 70px;
        border: 0px;
        font-size: 16px;
        background: none;
        font-family: "microsoft yahei";
        cursor: pointer;
    }

    .loginkj > span {
        float: left;
        display: block;
        font-size: 12px;
        margin: 5px 0 0 0;
        padding: 0;
        width: 100%;
    }