These tags are enough to build a real webpage. Not a startup. Not an app. Just something that opens in a browser and doesn't cry for help.
Open the demo page. Notice how boring it is. Notice how it still works.
<html>
The container for everything. Without it, browsers guess. Browsers guess like toddlers. Do you trust toddlers with your website?
<head>
Invisible but important. Holds secrets (metadata), titles, links. No, users won't see it. Yes, it still matters.
<title>
The text in the browser tab. Leaving this blank makes your site look like a digital ghost. Ghosts don't get clicks.
<body>
Everything visible goes here. If users can see it, it belongs in the body. This is not rocket science.
<h1> to <h6>
Headings give structure. Use them in order like normal people. Using <h6> for tiny text is like wearing socks with sandals. Don't.
<p>
Paragraphs hold text. Actual sentences. Words humans can read without squinting.
<br>
Line break. Use when you must. Using 20 in a row is a cry for help. We see you.
<hr>
A horizontal divider. Old. Simple. Still works. Like your dad's favorite hammer.
Reality Check
The demo page uses only these tags. No CSS. No JavaScript. And yet, it is a valid website. That's the baseline.
<!DOCTYPE html>
<html>
<head>
<title>My First Website (Be Nice)</title>
</head>
<body>
<h1>Welcome Human</h1>
<p>
This is a website.<br>
It is not impressive.
</p>
<hr>
<p>
It has text.<br>
It has structure.<br>
That is enough for now.
</p>
<hr>
<p>
Design comes later.<br>
Animation comes later.<br>
Making it pretty is tomorrow's problem.
</p>
</body>
</html>
Small Announcement
Some tags are explained briefly. Some are left for you to Google.
Googling is not cheating. It is literally the job.