Mixed Content issue

Mixed Content: The page at ‘https://texasprepaypower.com/’ was loaded over HTTPS, but requested an insecure font ‘http://fonts.gstatic.com/s/opensans/v14/cJZKeOuBrn4kERxqtaUH3aCWcynf_cDxXwCLxiixG1c.ttf’. This request has been blocked; the content must be served over HTTPS.
in https://texasprepaypower.com/wp-includes/js/jquery/jquery.js?ver=1.12.4

How to solve this issue? i tried many ways but its not works for me.

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