body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
    direction: rtl;
    text-align: right;
}
h1 {
    color: #007bff;
}
input[type="text"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
ul {
    list-style-type: none;
    padding: 0;
}
li {
    background: #fff;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
li.completed {
    background-color: #d4edda;
    text-decoration: line-through;
}