Missing box-sahdow on iPad in landscape position?

Question

css

Good day!
Colleagues, in general, for the first time I encountered such a thing that the box-shadow on Ipad disappears in a horizontal position or when the site approaches
On the first block:

For clarity, I give a link
Please help....

Answer 1

.resize onresize
when rotated, the size of the browser window changes and the shadow moves out.