Responsive Navigation
Instead of attaching multiple click handlers for the same element, you should just combine them into one function:

$(document).ready(function () {
    $(".menu").click(function () {
        $('#menu').animate({
            'left': '0px'
        });
        $('#container').animate({
            'left': '100px'
        });
    });
    $("#close").click(function () {
        $('#menu').animate({
            'left': '-100px'
        });
        $('#container').animate({
            'left': '0px'
        });
    });
});


Other than that, i don't see anything to optimize.