It is possible to expand a textarea only with CSS?

Question

I have a textarea with 200px of height, but when I pass that 200px with text I want to have the textarea expanded instead of keeping the 200px of height with a scroll bar.

Answer 1

No it is not possible to do only with css, but you could use jquery:

$('#your_textarea').on('keydown', function(e){
    var that = $(this);
    if (that.scrollTop()) {
        $(this).height(function(i,h){
            return h + 20;
        });
    }
});