Show post with extra large word by button using JavaScript

Want to show big when clicking on button on your select post. So use JavaScript and ID on your post, when click any one in button then automatic increase font size of post.

How to do

1. Open any post and add id=”bigfont” then save yout post.
   [ex- <p id=”bigfont”> hello my self thekroyaard </p>]
2. Then Add button code where you want to show button in post.
   [code- <button onclick=”btnbigpost()”>Click fot Big</button>]
3. Now paste given JavaScript code in your theme then SAVE.

code–

<script>
function btnbigpost() {
let x = document.getElementById(“bigfont“);
x.style.fontSize = “25px”;
x.style.color = “red”;
}
</script>