RemixIconEx.Media.volume_down

You're seeing just the function volume_down, go back to RemixIconEx.Media module for more information.
Link to this function

volume_down(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Media.volume_down()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M13 7.22L9.603 10H6v4h3.603L13 16.78V7.22zM8.889 16H5a1 1 0 0 1-1-1V9a1 1 0 0 1 1-1h3.889l5.294-4.332a.5.5 0 0 1 .817.387v15.89a.5.5 0 0 1-.817.387L8.89 16zm9.974.591l-1.422-1.422A3.993 3.993 0 0 0 19 12c0-1.43-.75-2.685-1.88-3.392l1.439-1.439A5.991 5.991 0 0 1 21 12c0 1.842-.83 3.49-2.137 4.591z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}