Safari浏览器问题：固定页脚隐藏了我内容的底部部分

The following is a problem with the Safari browser. It works fine with Chrome. I am working on a grid based portfolio site that is having some problems with the content being hidden. The last three tiles of a 3 x 4 grid are being cut off currently, is there any way to make them visible when you scroll? Thanks!The following is a problem with the Safari brow