Todo App with LocalStorage and SortableJs

Hi guys, this is my second javascript challenge. I made some improvisation in this solution, like what will show when there are no todos, using localstorage that will save user's data, etc.

In the CSS part, I really struggle when styling checkbox, especially when add gradient on the border. My solution for that problem is I use inkscape to design checkbox hover and checked style. I design that style on inkscape, then I use it as background image.

However, I still need many feedbacks from you guys. Feel free to visit my live site and try my todo app, also let me know if you find error or function that not working properly. Your feedback is very important to me.

Thank you guys.