The second media query for Large Screens had an incorrect px value in the comment
// Large screens
@media only screen and (min-width: 64.063em) { } /* min-width 1025px, large screens */
-@media only screen and (min-width: 64.063em) and (max-width: 90em) { } /* min-width 1024px and max-width 1440px, use when QAing large screen-only issues */
+@media only screen and (min-width: 64.063em) and (max-width: 90em) { } /* min-width 1025px and max-width 1440px, use when QAing large screen-only issues */
// XLarge screens
@media only screen and (min-width: 90.063em) { } /* min-width 1441px, xlarge screens */