You're a complete stranger visiting my site. I don't know you. In particular, I don't know how good your eyesight is.
Because of this, when writing my site, I haven't specified a font size. I didn't want to choose one that was too small. I've left it up to your browser to choose the font.
These few pages are here to let you know how you can tell your browser which font size you like best.
Here it is: How to Adjust the Font Size in Your Browser.
If you have a website of your own and would like to include some instructions like these, then you can copy mine with some conditions. See my instructions for webmasters for further details.