If you want to use a ghost button on your next website you are in luck, have a look at this button that has a gradient effect on hover. It was designbed by Envato Tuts+
If you are having trouble with the pen, try the archived copy on GitHub
Gradient Button Snippet
See the Pen Weekly Inspiration: Good Gracious, Gradients by Envato Tuts+ (@tutsplus) on CodePen.0