body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

.container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 300px;
}

.input-section {
    display: flex;
    margin-bottom: 20px;
}

#todo-input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-right: 10px;
}

#add-btn {
    padding: 10px;
    background-color: #28a745;
    border: none;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
}

#add-btn:hover {
    background-color: #218838;
}

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

li {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.edit-btn, .delete-btn {
    background: #007bff;
    border: none;
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
}

.edit-btn {
    background: #ffc107;
}

.edit-btn:hover {
    background: #e0a800;
}

.delete-btn:hover {
    background: #dc3545;
}

button:focus {
    outline: none;
}