body {
    font-family: Arial, sans-serif;
    background: #e0e7ff;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 400px;
    margin: 60px auto;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 30px 20px;
    text-align: center;
}
h1 {
    color: #3b82f6;
}
input[type="text"] {
    padding: 10px;
    width: 70%;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-bottom: 10px;
}
button {
    padding: 10px 20px;
    background: #3b82f6;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-left: 5px;
}
button:hover {
    background: #2563eb;
}
.result {
    margin-top: 20px;
    font-size: 1.1em;
    color: #333;
}