said 7 months ago:
The ‘Old fashioned’ way to achieve this would be with image replacements of the text – this will work in old browsers too – If you use this method, then make sure you have a navigation that can be used with screen readers but hidden by default.
With CSS3, you could look into text-rotation, however using that can be a ROYAL pain! – This won’t work in old browsers
I hope that gives you a starting point.