Dynamic css file change

1. Create a html file

and put the codes

-A    A    A+
Soumen Ghosh

2. And create 3 css files with different font size and name them

"style1.css" write body { text-align: center; font-size:9px; }
"style2.css" write body { text-align: center; font-size:20px; }
"style3.css" write body { text-align: center; font-size:36px; }