Quick guide to customising Firefox to view the UKCRN website
Increase or decrease the size of the fonts used on the site by going to menu bar > View > Text Size > Increase/Decrease
You may also find it easier to read the text on different colour backgrounds. To customise the view go to menu > Tools > Options
Under the content tab, choose Colours (You can also change the text font and size in this panel)
Click on the coloured box and choose a replacement colour.