html,
body {
    height: 100%;
}

/* input[type="text"],
input[type="password"] {
    background: #fafafa;
    /* You might not need this if you prefer Bootstrap's defaults */
}

*/ #logo {
    display: block;
    margin: 0 auto 20px;
}

.heading h1 {
    font-size: 18px;
    /* Adjusted for better visibility */
    color: #333;
    /* Darker color for better readability */
}

#auth-container {
    padding: 20px;
    background-color: #fff;
    /* Simplified background for modern look */
    border-radius: 5px;
    box-shadow: 0 1px 5px rgba(0, 0, 0, .1);
}

#auth-container input[type="text"],
#auth-container input[type="password"] {
    margin-bottom: 1rem;
    /* Adds space below inputs */
}

.action .control-group {
    margin-bottom: 0;
}

.section.action input[type="submit"] {
    width: 100%;
    /* Bootstrap friendly full-width button */
    margin-top: 10px;
    /* Space above the button */
}

#logo {
    max-width: 250px;
    /* Adjust this value to suit your needs */
    height: auto;
    width: 100%;
    /* This maintains responsiveness */
}