there is a problem with your stylesheet files in your child-theme. Please check the source code. You call first a non existing file (responsive.css -> http://www.trinnovative.com/wp-content/themes/carina-child/responsive.css?ver=4.0) in your child-theme, and after this the original style.css file. If you call the stlye.css file after the responsive stylesheet, then this will overwrite the reponsive stylesheet rules.
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