根据点击的单选按钮更改'li'css样式

I would like to change css style of elements on the page, based on radio button checked. I have dynamically added elements on the page, each element has 3 radio buttons, I would like when users press on the radio buttons 1,2 or 3 on each element, so the styles of each element will change ... so far I was able to change all elements styles on the page, but I like to change only particular element style..I would like to change css style of elements on