Start tag head seen but an element of the same type was already open.
also I got some other errors:
” Saw <?. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.) “
and
” No p element in scope but a p end tag seen. “
I have no clue how to fix them.
<!DOCTYPE html>
<html lang="pl">
<style>
html, body { margin: 0; padding: 0; color: black; background-color: grey;}
#strona { position: absolute; color: white}
#rects { position: relative; width: 300px; height: 125px; border: 1px solid #FF0000; color: yellow; margin: 5px; padding: 2px;}
</style>
<head>
<meta charset="UTF-8"/>
<title> site</title>
</head>
<body>
<div> <script>
function clickbutton1(){
document.getElementById("opis").innerHTML = Date();
}
</script>
</div>
<div id="strona">
<h1>test</h1>
<?php
echo "<p>data replacement</p>";
echo "<div id='rects'>
<!-- starting of the function -->
<p id='opis'> internal description </p>
<script>
document.getElementById('rects').onclick = clickbutton1;
</script>
</div>";
?>
</div>
</body>
</html>```