投资组合显示相同的图片而不是不同的图片 - html，css

I'm trying to display some pictures in my portfolio section on my website. On the background of the portfolio, you can see different pictures, but when i click "show details", it opens new window on same page, but pictures are both same, instead of different ...it displays pic1.png in both, instead of pic1.png and pic2.png.I'm trying to display some pictures in my portf