* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f5f5;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 400px;
    background: white;
    border-radius: 12px;
    padding: 30px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 1.5rem;
}

.button-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

.btn {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: #007bff;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #0069d9;
}

.btn:active {
    transform: translateY(1px);
}