RemixIconEx.Design.layout

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

layout(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Design.layout()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M5 8h14V5H5v3zm9 11v-9H5v9h9zm2 0h3v-9h-3v9zM4 3h16a1 1 0 0 1 1 1v16a1 1 0 0 1-1 1H4a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1z" />
</svg>

example usage

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