body {
    margin: 0;
    padding: 0;
    font-family: 'Helvetica', 'Arial', sans-serif;
    background: #f1f1f1;
}

.login-container {
    width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,.2);
    text-align: center;
}

.login-container h2 {
    margin-bottom: 20px;
    color: #333;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.btn {
    background: #4285f4;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 10px;
}

.btn:hover {
    background: #306acb;
}

.error-msg {
    background-color: #ffcccc;
    color: #ff0000;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
}