How to make file attach form using the attach icon?

How to make file attach form using the attach icon. Thanks in advance.

No. But what i really need is instead of normal file upload button to show i want the file attach icon, like the freecodecamp is using.

try http://fontawesome.io/icon/paperclip/

I have seen it sir, but i want that icon to be the entire file upload form on web page. For example, if someone click on the icon it will take the person to the place where the file the person want to upload is.