html, body {
    height: 100%;
}

body {
    background-image: url(img/login_bg.jpg);
    background-size: cover;
    font-family: '微软雅黑','雅黑','黑体';
    transition: background-image 2s ease-in-out;
}

div.app-caption {
    color: #fff;
    font-weight: bold;
    font-size: 3em;
    font-weight: bold;
    text-align: center;
    text-shadow: 2px 2px 8px #ccc;
    padding: 1em 0;
}

.form-signin {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    margin-left: -200px;
    margin-top: -150px;
    padding: 10px 30px 0px 30px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    border: solid 1px #ccc;
    box-shadow: 0 0 100px rgba(0, 0, 0, .6);
}

.form-signin-heading {
    margin-bottom: 10px;
    padding: 0.5em 0 0.2em 0;
    text-align: left;
    font-size: 24px;
    font-weight: bold;
    text-shadow: 2px 2px 4px #f4f4f4;
}

.form-signin .btn {
    margin-bottom: 20px;
}

div.alert {
    margin-bottom: 20px;
    cursor: pointer;
}

div.copy-right {
    color: #fff;
    text-shadow: 3px 3px 6px #000;
    padding-bottom:1em;
}
    div.copy-right a {
        color: #fff;
    }

div.input-group {
    margin-bottom: 10px;
}

.code-container {
    position: relative;
}

    .code-container img {
        position: absolute;
        top: 1px;
        right: 1px;
        z-index: 50;
    }

div.user-info {
    color: #fff;
    text-align: center;
}

    div.user-info a {
        color: #ccc;
        padding: 0 5px;
    }

        div.user-info a:hover {
            color: #fff;
        }

div.app-container {
    padding: 50px;
    text-align: center;

    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

    div.app-container a {
        float: left;/*for ie9*/
        text-align: center;
        background-color: rgba(255, 255, 255, 0.5);
        border-radius: 8px;
        border: solid 1px #ccc;
        box-shadow: 0px 0px 30px #ccc;
        color: #fff;
        margin: 30px 20px;
        padding: 10px 15px;
        font-size: 1em;
        list-style: none;
        transition-duration: 0.3s;
        transition-property: all;
    }

        div.app-container a img {
            display: block;
            width: 96px;
            margin: auto;
        }


        div.app-container a:hover {
            transform: scale(1.2,1.2);
        }

        div.app-container a.disabled {
            cursor:not-allowed;
            background-color: rgba(255, 255, 255, 0.5);
            color: #333;
        }

            div.app-container a.disabled:hover {
                text-decoration: none;
                transform: none;
            }