Changing the preloader icon
If you want to change the preloader icon of your Zerif Pro theme you may need to follow a few easy steps.
First of all, you need to go to zerif-pro/images and there you will find a file named loading. The file has a .gif extension and you can replace it with any other .gif you want, the only detail you have to keep in mind is that the new .gif has to replace the one Zerif already has and name the .gif loading.gif
Let us know if you have more questions regarding this.