html, body {
    font-family: Arial,Helvetica,sans-serif;
    margin: 0;
}
h1 {
    margin: 0;
}
.header-navbar {
    height: 45px;
    box-shadow: 0 2px 2px rgba(0,0,0,.35);
    background: #000;
}
#login {
    padding-top: 10%;
    margin: 0 auto;
    width: 400px;
    opacity: 1;
}
.login-form {
    border: 1px solid #000;
    box-shadow: 0 0 3px #ccc;
    background-color: #fff;
}
.login-form > form {
    padding: 15px;
    text-align: center;
    color: #ecf0f1;
    background: #000;
}
.login-form h2 {
    line-height: normal;
    color: #fff;
}
.login-form .btn {
    margin-top: 15px;
    border: 1px solid #fff;
    padding: 8px;
}
.btn-green,
.btn-green:hover {
    color: white;
    border: none;
    box-shadow: inset 0 1px 0 0 #000;
    background: #000;
}