html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}
#content{
    box-sizing: border-box;
    /*为元素指定的任何内边距和边框都将在已设定的宽度和高度内进行绘制*/
    min-height: 100%;
    padding-bottom: 50px;
    position: relative;
}
#footer {
    height: 50px;
    margin-top: -50px;
}
.divColumnCenter{
    position: absolute;
    top: 45%;
    transform: translate(0,-45%);
}


@media screen and (min-width: 992px){
    .divColumnCenter{
        width: 100%;
    }
}
@media screen and (max-width: 992px){
    .divColumnCenter{
        margin: 0 15px;
    }
}

.copyright,.navbar-inverse{
    margin-bottom: 0px;
    border: 0px;
}

body{
    background-image: url('/static/img/login.png'); min-height: 700px;
}