div[data-position="mobile-box"]{display:block;margin:30px auto;width:calc(100vw - 40px);overflow:hidden;text-align:center}div[data-position="mobile-box"] .mobile-box-ad-mock{height:250px}div[data-position="mobile-box"] .bb-ads__ad:not(:empty) ~ .mobile-box-ad-mock{display:none}div[data-position="mobile-box"] .bb-ads__empty{display:none}