如何用角的图像取代先前和下一个按钮的分页?

here is my html code for pagination , i am not getting how would i replace the next and previous buttons with the images , it is not even showing next and previous buttons in the html code itself , i have used the pagination tag to create a pagination , it is working fine but i need to replace the previous and next text with the images ,kindly help.here is my html code for pagination , i am not