mariokostelac

var $lessonWrapper = $('.course-wrap .lesson-wrapper');

// prevent default animation of right part
$lessonWrapper.css('webkitTransform', 'translateX(0px)');

// allow smooth resizing (just filling with default css value for attribute 'position')
$lessonWrapper.css('position', 'static');

// allow padding animation
$lessonWrapper.css('webkitTransition', 'padding 0.3s');