body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 0;
}
.todo-container {
    background: #fff;
    max-width: 400px;
    margin: 40px auto;
    padding: 24px 32px 32px 32px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
h1 {
    text-align: center;
    color: #333;
}
#todo-form {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
#todo-input {
    flex: 1;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
#todo-form button {
    padding: 8px 16px;
    background: #4caf50;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}
#todo-form button:hover {
    background: #388e3c;
}
#todo-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.todo-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}
.todo-item:last-child {
    border-bottom: none;
}
.todo-text {
    flex: 1;
    color: #333;
}
.todo-completed .todo-text {
    text-decoration: line-through;
    color: #aaa;
}
.delete-btn {
    background: #e53935;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 4px 10px;
    cursor: pointer;
    margin-left: 8px;
    transition: background 0.2s;
}
.delete-btn:hover {
    background: #b71c1c;
}