<!DOCTYPE html>
      .overlay {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.7);
        transition: opacity 500ms;
        visibility: hidden;
        opacity: 0;
      .overlay:target {
        visibility: visible;
        opacity: 1;

      .popup {
        margin: 70px auto;
        padding: 20px;
        background: #fff;
        border-radius: 5px;
        width: 30%;
        position: relative;
        transition: all 5s ease-in-out;

      .popup h2 {
        margin-top: 0;
        color: #333;
        font-family: Tahoma, Arial, sans-serif;
      .popup .close {
        position: absolute;
        top: 20px;
        right: 30px;
        transition: all 200ms;
        font-size: 30px;
        font-weight: bold;
        text-decoration: none;
        color: #333;
      .popup .close:hover {
        color: #06D85F;
      .popup .content {
        max-height: 30%;
        overflow: auto;

      @media screen and (max-width: 700px){
          width: 70%;
    <div class="overlay" id="popup">
      <div class="popup">
        <h2>Pop-Up Message</h2>
        <a class="close" href="#">&times;</a>
        <div class="content">
          This is a simple pop-up message created using HTML and CSS.

    <a id="popupBtn" href="#popup">Open Pop-Up</a>

This code creates a pop-up message that can be triggered by clicking a link with the ID “popupBtn”. The pop-up is created using HTML and CSS and is displayed when the link is clicked. The “overlay” class is used to create the semi-transparent background behind the pop-up and the “popup” class is used to style the actual pop-up box.

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