The “Read More” feature in HTML is used to display a shortened version of a long piece of content (such as an article or blog post) with the option to expand it and view the full content by clicking a button labeled “Read More”. This feature is often used to improve the user experience and reduce the amount of content displayed on a single page.

Here are the steps to create a “Read More” button in HTML:

1. Define a container element to hold the text and button, such as a <div>.
2. Inside the container, add the text you want to be initially visible and add a <span> element with an id to reference later for the “Read More” functionality.
3. Add the “Read More” button as an <a> element outside the text container.
4. Use JavaScript to toggle the visibility of the text inside the <span> element when the button is clicked. You can use the document.getElementById() method to access the span and modify its style.display property to show or hide the text.

Here’s one way to add a “Read More” link in HTML without using JavaScript:

<p class="long-text">
Lorem Ipsum is simply dummy text of the printing and typesetting industry
<a href="#" class="read-more">Read More</a>
</p>

<style>
.long-text {
overflow: hidden;
display: -webkit-box;
-webkit-line-clamp: 3;
-webkit-box-orient: vertical;
}
</style>

Here’s an example of how you can implement a “Read More” button using HTML, CSS, and JavaScript:

<p class="long-text">
Lorem Ipsum ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
</p>

<button class="read-more-btn">Read More</button>

.long-text {
max-height: 60px;
overflow: hidden;
transition: max-height 0.5s ease-out;
}

.read-more-btn {
display: block;
margin: 10px 0;
}

const longText = document.querySelector(".long-text");
const readMoreBtn = document.querySelector(".read-more-btn");

readMoreBtn.addEventListener("click", function() {
if (longText.style.maxHeight) {
longText.style.maxHeight = null;
readMoreBtn.innerHTML = "Read More";
} else {
longText.style.maxHeight = longText.scrollHeight + "px";
readMoreBtn.innerHTML = "Read Less";
}
});