body {
    padding: 0;
    margin: 0;
    list-style: none;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    /* align-items: center; */
    justify-content: center;
}

body {
    font-family: 'Kanit', sans-serif;
    font-size: 125%;
    background: url('../images/bg-login-mobile.jpg') no-repeat 0 0;
    background-size: 100% 125%;
}

.form-group.has-error input {
    border: 1px solid crimson;
    padding: 10px;
}

h5 {
    margin: 20px 0px;
}

.form-horizontal label {
    font-size: 100%;
}

label {
    font-size: 100%;
}

.login-box {
    color: #535e62;
}

.login-box .web-logo {
    padding-top: 30px;
}
.login-box .web-logo img {
    max-width: 100%;
}

.login-box h3 {
    font-size: 30px;
    font-weight: bold;
    text-align: center;
}

.login-box p,
.login-box a {
    font-size: 18px;
    color: #535e62;
}

.login-box .panel-primary {
    width: 100%;
    display: inline-block;
    margin-top: 20px;
    border-width: 0;
    border-color: transparent;
    background: url('../images/login-bg-space.png') repeat 0 0;
}

.login-box .panel-heading {
    background-color: transparent;
    border-width: 0;
    border-color: transparent;
}

.login-box .panel-heading h5 {
    margin: 10px 0;
    font-size: 16px;
    color: #000;
}
.login-box .panel-body p {
    font-size: 14px;
    color: #000;
    margin-bottom: 0;
}

.login-box .btn-success,
.login-box .btn-success:active {
    background-color: #535e62;
    border-color: transparent;
    border-width: 0;
    color: #fff;
    font-size: 14px;
    padding: 10px 10px;
    width: 100%;
    border-radius: 8px;
}
.login-box .text-intro {
    color: #fff;
    font-size: 14px;
}
.login-box .text-intro > div {
    background-color: #535e62;
    padding: 10px 0;
}
.login-box .text-intro > div.clearfix {
    padding: 0;
}
.login-box .text-intro > p {
    font-size: 16px;
    text-align: center;
    padding-top: 10px;
}
.login-box .form-horizontal .control-label {
    font-size: 16px;
    color: #000;
}

@media (min-width: 1200px) {
    body {
        background: url('../images/bg-login.jpg') no-repeat 0 0;
        background-size: cover;
    }

    .container {
        width: 1024px !important;
    }

    .login-box h3 {
        font-size: 40px;
        text-align: center;
    }
    .login-box .text-intro {
        color: #fff;
        font-size: 16px;
    }
    .login-box .text-intro > p {
        font-size: 20px;
        text-align: left;
        padding-top: 10px;
    }

    .login-box .panel {
        margin-top: 80px;
    }
    .login-box .btn-success {
        font-size: 20px;
        padding: 15px 10px;
    }
    .login-box .panel-body p {
        font-size: 16px;
    }
}