I want to make my div tag with id \"drag_me\" to be draggable up to the length of 300px from left and 460px from top, only using CSS.
I also want to make it resizabl
You can take a look at HTML 5, but I don't think you can restrict the area within you can drag it, just the destination:
http://www.w3schools.com/html/html5_draganddrop.asp
And if you don't mind using some great library, I would encourage you to try Dragula.