Untitled

using System.Web;

namespace SimpleHandlerAndModule.Handlers
{
    public class SimpleHandler : IHttpHandler
    {
        public bool IsReusable => false;

        public void ProcessRequest(HttpContext context)
        {
            string fullHtmlCode = "<!DOCTYPE html><html><head>";
            fullHtmlCode += "<title>Custom Hander and Module</title>";
            fullHtmlCode += "<meta name=\"viewport\" content=\"width=device-width\" />";
            fullHtmlCode += "<link type=\"text/css\" rel=\"stylesheet\" href=\"Content/Styles.css\" />";
            fullHtmlCode += "</head><body>";
            fullHtmlCode += "<div class=\"row\">" +
                "<div class=\"column\"><img src=\"https://5.imimg.com/data5/KD/NT/MY-6975226/rubik-cube-7x7x7-puzzle-educational-toy-500x500.jpg\"></div>" +
                "<div class=\"column\"><img src=\"https://5.imimg.com/data5/KD/NT/MY-6975226/rubik-cube-7x7x7-puzzle-educational-toy-500x500.jpg\"></div>" +
                "<div class=\"column\"><img src=\"https://5.imimg.com/data5/KD/NT/MY-6975226/rubik-cube-7x7x7-puzzle-educational-toy-500x500.jpg\"></div>" +
                "</div>";
            fullHtmlCode += "</body></html>";

            context.Response.Write(fullHtmlCode);
        }
    }
}