Button fill animation

Creates a fill animation on hover.

• Set a color and background and use an appropriate transition to animate changes to the element.
• Use the :hover pseudo-class to change the background and color of the element when the user hovers over it.

<button class="animated-fill-button">Submit</button>

.animated-fill-button {
  padding: 20px;
  background: #fff;
  color: #000;
  border: 1px solid #000;
  cursor: pointer;
  transition: 0.3s all ease-in-out;
}

.animated-fill-button:hover {
  background: #000;
  color: #fff;
}