Div与背景图像，没有内容不显示

I currently have a div on my page that I have given a background image. This div does not have any content and so it does not display on my page, if I add any content it displays. I would like it display even without content because I want that background image to show up as well as I would like to assign some hover/click events to it. I currently have a div on my page that I have g