body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background: #f4f4f4;
}
.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h1, h2 {
    color: #333;
}
form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}
input {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    flex: 1;
}
button {
    padding: 10px 15px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
button:hover {
    background: #218838;
}
ul {
    list-style: none;
    padding: 0;
}
li {
    background: #eee;
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
}