style.css

body {
    font-family: Arial, sans-serif;
    background-image: url('https://img.freepik.com/free-vector/abstract-digital-grid-vector-black-background_53876-111550.jpg?w=740&t=st=1697476850~exp=1697477450~hmac=6e3292d926da8420c5022b8adb981c97fb3fc0b867be3e43f6437a7bc152a3f5');
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-repeat: no-repeat;
    background-size: cover;
}

#task-container {
    max-width: 600px;
    width: 100%;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.task {
    margin-bottom: 15px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.task input[type="checkbox"] {
    margin-right: 10px;
}

.task input[type="text"] {
    flex: 1;
    margin-right: 10px;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.task button {
    background-color: #4caf50;
    color: #fff;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
}