--description--

Begin with the basic HTML structure. Add a DOCTYPE declaration and html, head, body, and title elements.

Set the language of this page to English. Set the title to Piano.

--hints--

Your code should contain the DOCTYPE reference.

assert(code.match(/<!DOCTYPE/gi));

You should include a space after the DOCTYPE reference.

assert(code.match(/<!DOCTYPE\s+/gi));

You should define the document type to be html.

assert(code.match(/<!DOCTYPE\s+html/gi));

You should close the DOCTYPE declaration with a > after the type.

assert(code.match(/<!DOCTYPE\s+html\s*>/gi));

Your html element should have an opening tag with a lang attribute of en.

assert(code.match(/<html\s+lang\s*=\s*('|")en\1\s*>/gi));

Your html element should have a closing tag.

assert(code.match(/<\/html\s*>/));

Your DOCTYPE declaration should be at the beginning of your HTML.

assert(__helpers.removeHtmlComments(code).match(/^\s*<!DOCTYPE\s+html\s*>/i));

You should have an opening head tag.

assert(code.match(/<head\s*>/i));

You should have a closing head tag.

assert(code.match(/<\/head\s*>/i));

You should have an opening body tag.

assert(code.match(/<body\s*>/i));

You should have a closing body tag.

assert(code.match(/<\/body\s*>/i));

The head and body elements should be siblings.

assert(document.querySelector('head')?.nextElementSibling?.localName === 'body');

The head element should be within the html element.

assert([...document.querySelector('html')?.children].some(x => x?.localName === 'head'));

The body element should be within the html element.

assert([...document.querySelector('html')?.children].some(x => x?.localName === 'body'));

Your code should have a title element.

const title = document.querySelector('title');
assert.exists(title);

Your project should have a title of Piano.

const title = document.querySelector('title');
assert.equal(title?.text?.trim()?.toLowerCase(), 'piano')

Remember, the casing and spelling matter for the title.

const title = document.querySelector('title');
assert.equal(title?.text?.trim(), 'Piano');

html

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css