body {
    font-family: Arial, Helvetica, sans-serif;
}
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 15px;
}
input[type="url"] {
    width: 80%;
    padding: 10px;
    margin: 10px 0;
}
button {
    padding: 10px 15px;
    background-color: #007BFF;
    color: white;
    border: none;
    cursor: pointer;
}
button:hover {
    background-color: #0056B3;
}