styles.css

.add-task {
    padding-bottom: 20px;
}

.todo-item {
    padding: 10px 0;
    border-bottom: 1px solid #dddddd;
}

    .todo-item .todo-check {
        position: relative;
        display: inline-block;
        border: 1px solid #dddddd;
        width: 22px;
        height: 22px;
        border-radius: 15px;
    }

        .todo-item .todo-check .checkmark {
            color: #ffffff;
            position: relative;
            top: 4px;
            left: 4px;
            font-size: 83%;
            
        }

    .todo-item .todo-check:hover {
        text-decoration: none;
        cursor: pointer;
    }

        .todo-item .todo-check:hover .checkmark {
            color: #dddddd;
        }

    .todo-item .task-title {
        padding-left: 10px;
        position: relative;
        top: 3px;
    }

    .todo-item .task-due-date {
        text-align: right;
        font-size: 80%;
        line-height: 27px;
    }