body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.container {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}
h1 {
    margin-bottom: 1.5rem;
    color: #333;
}
label {
    display: block;
    margin: 0.5rem 0;
    color: #555;
    text-align: left;
}
input[type="email"],
input[type="password"] {
    width: calc(100% - 20px);
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
}
.btn:hover {
    background-color: #0056b3;
}
.error {
    color: #e74c3c;
    margin-bottom: 1rem;
}
a.btn {
    display: block;
    margin-top: 1rem;
}