body {
    margin: 0;
    font-family: Arial, sans-serif;
}

.container {
    display: flex;
    flex-direction: column;
    padding: 1rem;
}

.header, .subheader, .menu, .footer {
    text-align: center;
    padding: 0.5rem;
}

.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.form-section {
    width: 100%;
    max-width: 400px;
}

input[type="text"],
input[type="password"],
input[type="submit"],
input[type="reset"] {
    width: 100%;
    padding: 0.75rem;
    margin: 0.5rem 0;
    box-sizing: border-box;
}

.form-buttons {
    display: flex;
    justify-content: space-between;
}