With ZPLUS theme now you can fully control the typography of the site. There is a dedicated options page to set both font size and line height alongwith font family . you can select form more than 600 google fonts available and also set the font weight to light, normal and bold . You can set the font family for the following -Select Body Font Family, Select Menu Font, Select Global Headings Font ( h1, h2, h3, h4, h5, h6 ) and Select Footer Headings Font. There is also a dedicated shordcode inside the text editor to add drop caps where you can define drop cap font size,style( None, square and round ), its color and background color.