$(document).ready(function() {
    $('#documentation').addClass('animated bounceIn').addClass('btn-lg btn-default download-btn-style');
    $('#download').addClass('animated bounceIn').addClass('btn-lg btn-default download-btn-style');
});

$(document).ready(function() {
    $('#signin').addClass('animated bounceIn').addClass('btn-lg btn-default download-btn-style');
    $('#download').addClass('animated bounceIn').addClass('btn-lg btn-default download-btn-style');
});

Change the javascript in the source file.
Change the javascript in the source file.
