body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    width: 300px;
    text-align: center;
}

h1 {
    margin-bottom: 20px;
}

input {
    padding: 10px;
    width: calc(100%);
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 15px;
    background: #28a745;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
}

button:hover {
    background: #218838;
}

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

li {
    background: #f4f4f4;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

li button {
    background: #dc3545;
    border: none;
    color: #fff;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    width: 30px;
    border-radius: 5px;
}

li button:hover {
    background: #c82333;
}