Design and incorporate button into existing website

I have an existing website ([login to view URL]) and I want to add a new button on the top right hand corner of the website as a link to another page. The new button should be a bubble similar to this one: [login to view URL] I want two buttons to be designed: One button should say 'Click here for Web marketing linkbait'. The second button should say 'Web marketing linkbait generator' I will then choose which one to use for the website. I want the CSS to be updated and the button incorporated into the page (see attached).