paper-fab ========= Material Design: Button `paper-fab` is a floating action button. It contains an image placed in the center and comes in two sizes: regular size and a smaller size by applying the attribute `mini`. When the user touches the button, a ripple effect emanates from the center of the button. You may import `iron-icons` to use with this element, or provide a URL to a custom icon. See `iron-iconset` for more information about how to use a custom icon set. Example: ```html ``` Styling ------- Style the button with CSS as you would a normal DOM element. If you are using the icons provided by `iron-icons`, the icon will inherit the foreground color of the button. ```html ``` By default, the ripple is the same color as the foreground at 25% opacity. You may customize the color using this selector: ```css /* make #my-button use a blue ripple instead of foreground color */ #my-button::shadow #ripple { color: blue; } ``` The opacity of the ripple is not customizable via CSS.