html, body{
    height: 100%;
}
    body.core-home-error {
        background-color: rgb(240,242,245);
    }
    .dd-error-container {
        max-width: 800px;
        margin: 0 auto;
        padding-top: 100px;
        text-align: center;        
    }

    .dd-error-container img {
        max-width: 400px;
    }

    .dd-error-container .bullshit {
        margin-top: 20px;
    }

    .dd-error-container .bullshit-oops {
        font-size: 24px;
        width: 40%;
        margin: 0 auto;
        color: #555;
        padding: 10px 50px;
        border-radius: 50px;
    }

    .dd-error-container .bullshit-headline {
        margin-top: 20px;
        font-size: 24px;
        color: #777;
        color: orangered;
    }

.core-uform-help {
    background-color: #ccc;
    min-height: 100%;
}

    .core-uform-help p, .core-uform-help ul, .core-uform-help ol {
        line-height: 1.8;
    }

    .core-uform-help .container {
        background-color: white;
        max-width: 920px;
        margin: 0 auto;
        min-height: 100%;
    }

    .core-uform-help .page {
        max-width: 800px;
        margin: 0 auto;
        min-height: 100%;
    }

    .core-uform-help pre {
        padding: 0;
    }

.dd-login-index-image {
    background-image: url('img/data.png');
    height: 300px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    margin: 0px 30px 0px 0px;
}

.dd-login-findpwd-image {
    background-image: url('img/login/login.png');
    height: 300px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    margin: 0px 30px 0px 0px;
}

.dd-login-join-image {
    background-image: url('img/login/join.png');
    height: 420px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    margin: 0px 30px 0px 0px;
}

.dd-login {
    height: 100%;
    display: flex;
    align-items: center;
}

.dd-login-title {
    font-size: 30px;
    margin: 0px 0px 15px 0px;
}

.dd-login .form-group input.form-control {
    line-height: 40px;
    height: 40px;
}

.dd-login-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    height: 50px;
    line-height: 50px;
    background-color: #fcfcfc;
}

.dd-login-extra {
    text-align: right;
    margin-top: 15px;
}

.dd-login-tips {
    color: #777;
}