User blog comment:CzechOut/How Portable Infoboxes Can Change Your Style/@comment-25483420-20160716071634/@comment-1824272-20160716082607

You can fix that by using CSS. Your infobox template at Template:Infobox_Biome already has CSS being used to dictate the size of the title. So change the value of it to fit your needs. Currently it says "font-size:100%" so maybe change it to 80%? Fiddle around and see what works!