Input display position is off for narrow viewports

[belg4mit]

If I have a narrow window, such as an older phone e.g; 500px; the input field is positioned far to the right of the control, outside of the current viewport, like this:

[belg4mit]

Here is a partial fix (for a 150x150 knob) that makes the control usable, you'll need to adjust as needed:
jQuery('.ControlContainer > div').css({ "position": "relative", "display": "block" });
jQuery('.ControlContainer input').css({"top": "50%", "margin-top": "-25px", "left": "50%", "margin-left": "-40px" });