最小宽度不能正确缩放图像?

My css for a background image doesn't "scale down" the image so you can actually view it, i've used min and max width, to no effect. I'm trying to do this task via html/css only, thanks! If a solution could be made without using absolute positioning that'd be great, because I do want this to be responsive.My css for a background image doesn't "scale do