body {
    font-family: Arial, sans-serif;
    background: linear-gradient(120deg, #74ebd5, #9face6);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

button {
    padding: 12px 25px;
    font-size: 16px;
    border: none;
    border-radius: 8px;
    background-color: #5a67d8;
    color: white;
    cursor: pointer;
}

button:hover {
    background-color: #434190;
}

.back {
    position: fixed;
    bottom: 20px;
    left: 20px;
}