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/* Momentum scrolling on iOS */ .scrollable-area { overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; } /* jQuery scroll handler with throttle */ let scrollTimer; $(window).on("scroll.mobile", function() { clearTimeout(scrollTimer); scrollTimer = setTimeout(function() { const pos = $(window).scrollTop(); if (pos > 200) $("#back-top").fadeIn(); else $("#back-top").fadeOut(); }, 50); });
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