body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
}

input[type="text"] {
    width: calc(100% - 22px);
    padding: 10px;
    margin-bottom: 10px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    padding: 10px;
    margin-bottom: 10px;
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
}

a {
    color: #007bff;
    text-decoration: none;
}