.bg-body-dark{
    width:100%;
    height:auto;
    FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=#c8dad6,endColorStr=#fafafa); /*IE*/
    background:-moz-linear-gradient(top,#c8dad6,#fafafa);/*火狐*/
    background:-webkit-gradient(linear, 0% 0%, 0% 100%,from(#c8dad6), to(#fafafa));/*谷歌*/
    background-image: -webkit-gradient(linear,left bottom,left top,color-start(0, #c8dad6),color-stop(1, #fafafa));/* Safari & Chrome*/
    filter:  progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#15A216', endColorstr='#fafafa'); /*IE6 & IE7*/
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#15A216', endColorstr='#fafafa')"; /* IE8 */
}
@media (min-width: 1200px){
    .col-xl-6 {
        -ms-flex: 0 0 50%;
        flex: 3 0 50%;
        max-width: 60%;
    }
}
.btn-hero-primary {
    background-color:#149f01;
}
.btn-hero-primary:hover
{
    background-color:#149f01;
    opacity: 0.8;
}
.alert-error{
    color: red;
}
.form-control {
    margin-left:-2px;
}
.login-fields {
    display: flex;
    flex-direction: column;
    /* 预留密码登录三组输入框及其下间距，切换登录方式时保持按钮和卡片高度一致。 */
    min-height: calc(10.5rem + 6px);
}