RemixIconEx.Design.layout_top

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

layout_top(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Design.layout_top()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M21 3a1 1 0 0 1 1 1v16a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1h18zM4 10v9h16v-9H4zm0-2h16V5H4v3z" />
</svg>

example usage

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