body {
    font-family: sans-serif;
    background: #f7f7f7;
    padding: 2em;
    color: #333;
}
.container {
    background: #fff;
    padding: 2em;
    max-width: 600px;
    margin: auto;
    border-radius: 10px;
    box-shadow: 0 0 10px #ccc;
}
input[type="url"] {
    width: 100%;
    padding: 10px;
    margin-top: 0.5em;
}
button {
    margin-top: 1em;
    padding: 10px 20px;
    background: #0078d7;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}
table {
    width: 90%;
    margin: 1em auto;
    border-collapse: collapse;
}
th, td {
    padding: 8px 12px;
    border: 1px solid #ccc;
}
a {
    color: #0078d7;
}