多读按钮，只打开父div。

I have a read more button on my website that once clicked, shows more of the text (or code) bellow. The problem is if I use 2 of the read more functions on same page, they will open and close each other (both will open and close no mather wich button I use. How can I make it only open the parent div?I have a read more button on my website that on