jquery.mobile-1.0.1.min.css CSS includes the following:
.ui-body-c, .ui-body-c input, .ui-body-c select, .ui-body-c textarea, .ui-body-c button { font-family: Helvetica,Arial,sans-serif; }
This is the spelling of inline css.
So, if you give you an inline style of a higher value, it will work:
body .ui-body-c{ font-family:"Lucida Grande"; font-size:200%; }
See - http://jsfiddle.net/AaT9b/19/
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