Font size set in document, not in template.

Enables easy change by altering the fi-thesis-report document class options.
Default in example remains 12pt.

fi-thesis-report.cls

@@ -8,7 +8,7 @@
 % Based on 'article'
 \DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
 \ProcessOptions \relax
-\LoadClass[12pt]{article}
+\LoadClass{article}
 
 % Load necessary packages
 \RequirePackage[utf8]{inputenc}

thesis-report.tex

-\documentclass{fi-thesis-report}
+\documentclass[12pt]{fi-thesis-report}
 
 \usepackage{lipsum}