执行AJAX请求后未应用CSS

I am struggling with an issue after an AJAX request. I am requesting data from the database. That itself works perfectly and I process the data and add it into a table within the PHP file. That table consists of a caption followed by the data. This table is then transferred to the main page where it is displayed. My problem is that I am trying to format the buttons that I create in the PHP to be formatted as well. Here's the PHP with the data requestI am struggling with an issue after an AJAX req