Each website/customers is different and in each case this may work different. Of course it is possible to make text smaller on mobile devices but for that you must plat with @media only srceen styles and for each screen you must setup different font sizes. More information about that you can read on http://themes.muffingroup.com/betheme/documentation/#theme-customizations
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h1, h2, h3, h4 { word-wrap: break-word; }