I don't see anything wrong. Nothing looks any different than it ever has on this Chromebook or on my 15 inch Acer laptop that is using Linux and a Firefox browser.

Are you on your Chromebook now?
If So ..See those three little vertical dots up in the top right hand corner of your screen?
Click those dots. Go down to Zoom - + I am set at 125. Click the - and + to make thing bigger or smaller on your screen.

........