Untitled

<!DOCTYPE html>
<html>
 <head>
   <title>HTML basics<title/>

     <head/>
     <body>
       <h1> Pierwsze zadanie><h1/>
         <body/>
         <html/>
<script id="jsbin-source-html" type="text/html"><!DOCTYPE html>
<html>
 <head>
   <title>HTML basics<title/>

     <head/>
     <body>
       <h1> Pierwsze zadanie><h1/>
         <body/>
         <html/>

        </script>