There's a abstract background behind the tag line on this website http://www.kreativetec.com/ Can anyone help me find a motion graphic similar like this but green in color ?

On this Link " https://jamesriver.org/connect " When you scrolll down and see the picture of the kids, the moment you hover over it, Theres a color filter that appears on top of it with text. Can anyone tell me how to do this on wix?

While's creating a form on my website i noticed i dont have an option to add a drop down menu full of countries and cities? can anyone please provide me with the steps on how to add this to my form?