CSS Properties: How to change the background-color if the viewport is 400 pixels wider

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HTML Code:

<!DOCTYPE html>
<title>How to change the background-color if the viewport is 400 pixels wider</title>
<style type="text/css">
body {
    background-color: #3300FF;

@media screen and (min-width: 400px) {
    body {
        background-color: #00FFFF;
<p>w3resource Tutorial</p>
<h2>Resize the browser window and see @media effect!</h2>
<p>CSS, stands for Cascading Style Sheet is a computer language to describe presentation (for example width, height, color, background color, alignment etc.) of HTML and XML (and XML based languages like XHTML, SVG) web documents. In all the examples of our tutorials, we have used HTML for implementing CSS.</p>

Live Demo :

See the Pen media-answer by w3resource (@w3resource) on CodePen.

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HTML-CSS: Tips of the Day

Stacking DIVs on top of each other?

CSS Code:

.inner {
  position: absolute;

HTML Code:

<div class="outer">
   <div class="inner">1</div>
   <div class="inner">2</div>
   <div class="inner">3</div>
   <div class="inner">4</div>

Ref: https://bit.ly/3AvpGf9


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