If you wanna change the type of font and colour as well

Also if you use pt instead of px you can then judge text sizes via using Word as it stands for point


Code:
<a href="blah" style="font-size: 25pt; font-face:Arial; color:red;">Blah</a>
<a href="blah" style="font-size: 72pt; font-face:Arial; color:red;">Blah</a>