I'm trying to create fontend channel form page with a Grid field that has 3 columns. I've tried different variations but don't seem to get it working correctly. I have the css linked in my header
<link href="{path='css/_ee_channel_form_css'}" type="text/css" rel="stylesheet" media="screen">
The docs say to use
{field:my_field_name}
or if you are using {custom_fields} it says to use {if grid} {display_field} {/if}
But then it says "Manual construction of grid type fields is not supported. Most customization of grid fields can be done by overriding the CSS."