body {
    background-color: #f9f9f9;
}

.login-panel {
    margin-top: 50px;
}

.panel-heading {
    background-color: #337ab7;
    color: #fff;
    padding: 10px;
    border-bottom: 1px solid #337ab7;
}

.panel-body {
    padding: 20px;
}

.form-control {
    height: 40px;
    box-shadow: none;
    border-color: #ddd;
}

.btn-success {
    background-color: #337ab7;
    border-color: #337ab7;
}

.alert-danger {
    margin-top: 20px;
}