grid-template-columns: repeat(5, 1fr);
border: 1px solid rgba(0,0,0,0.3);
box-shadow: 2px 2px 6px 0px rgba(0,0,0,0.3);
<img src="/pix/samples/22m.jpg" alt="Sample photo">
<img src="/pix/samples/23m.jpg" alt="Sample photo">
<img src="/pix/samples/24m.jpg" alt="Sample photo">
<img src="/pix/samples/25m.jpg" alt="Sample photo">
<img src="/pix/samples/15m.jpg" alt="Sample photo">
<img src="/pix/samples/17l.jpg" alt="Sample photo">
<img src="/pix/samples/27m.jpg" alt="Sample photo">
<img src="/pix/samples/28m.jpg" alt="Sample photo">
<img src="/pix/samples/26m.jpg" alt="Sample photo">
<img src="/pix/samples/30m.jpg" alt="Sample photo">
<img src="/pix/samples/31m.jpg" alt="Sample photo">