//find the following code below :
String font_style_default = "<style type=\"text/css\">@font-face {font-family: MyFont;src: url(\"file:///android_asset/font/custom_font.ttf\")}body {font-family: MyFont; font-size: medium; text-align: left;}</style>";

//Replace the code with this :
String font_style_default = "<style type=\"text/css\">@font-face {font-family: MyFont;src: url(\"file:///android_asset/font/custom_font.ttf\")}body {font-family: MyFont; font-size: medium; text-align: right;}</style>";