<html> — Root element of the HTML document<head> — Contains meta information<body> — Visible content of the page<title> — Title shown in browser tab<h1> to <h6> — Headings (h1 is most important)<p> — Paragraph<div> — Block-level container<span> — Inline container<strong> — Important/bold text<em> — Emphasized/italic text<ul> — Unordered list<ol> — Ordered list<li> — List item<a> — Hyperlink<img> — Image<br> — Line break<form> — Form container<input> — Input field<label> — Label for inputs<button> — Button<textarea> — Multi-line text area<select> — Dropdown menu<header> — Header section<nav> — Navigation<footer> — Footer section<table> — Table<tr> — Table row<td> / <th> — Table cell / header cell