box-shadow: 3px 3px 8px 0px rgba(0,0,0,0.3);
<img src="/pix/samples/23m.jpg" alt="Sample photo">
<img src="/pix/samples/24m.jpg" alt="Sample photo">
<img src="/pix/samples/22m.jpg" alt="Sample photo">
<img src="/pix/samples/28m.jpg" alt="Sample photo">
<img src="/pix/samples/29m.jpg" alt="Sample photo">
<img src="/pix/samples/30m.jpg" alt="Sample photo">
<img src="/pix/samples/27m.jpg" alt="Sample photo">
<img src="/pix/samples/32m.jpg" alt="Sample photo">
<img src="/pix/samples/33m.jpg" alt="Sample photo">