All you need to do to use semantic html tags is avoid using <div&rt; and instead use semantic tags such as <header>, <article>, <footer>
<header>: The header tag is used to define introductory information about the page
<nav>: The nav tag is used for navigation sections, such as those at the top of this page
<main>: The main tag is used to contain the main/most important content of the page, you should only use one of these per page
<article: The article tag is used for content which could stand alone from the rest of the page, such as this block of text
<aside>: The aside tag is used for sidebars
<footer>: The footer tag is used for the footer of the page, it is used to contain contact information, information about the content, copyright information and sometimes site navigation