I added a content editor webpart in my sharepoint page. By default it is using 'Verdan' font type. How would I change it to 'Arial' ?
The default font settings for the body of a content editor web part are controlled by the
style in the corev4.css file. To change it you will need to override that style with your own CSS
Changing the Default Text Style in the Content Editor
This will change the default font size in the wiki editor on a publishing site.
And if you want to change the default style for hyperlinks: