body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 20px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.dashboard-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 15px;
}

input[type="password"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

.error {
    color: red;
    margin-bottom: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #f2f2f2;
}

.expired {
    color: red;
}

.valid {
    color: green;
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 4px;
    border: 1px solid #ffcdd2;
}