Thanks @tjoyce. Took a closer look and yes, it was breaking in Chrome PC as well.
I'll re-read the CSS this weekend to see if I can figure out why the original designer used the following '375px;' setting and remove it if no longer needed.
Got this code-OCD (aka: COCD) thing going on, so ... won't rest easy until it's solved in my head.
Should be good now. Thanks again -- really solved.
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