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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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* {
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.menu {
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.menuitem {
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.main {
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@media only screen and (max-width:800px) {
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<body style="font-family:Verdana;">

<div style="background-color:#f1f1f1;padding:15px;">
  <h1>Cinque Terre</h1>
  <h3>Resize the browser window</h3>
</div>

<div style="overflow:auto">
  <div class="menu">
    <div class="menuitem">The Walk</div>
    <div class="menuitem">Transport</div>
    <div class="menuitem">History</div>
    <div class="menuitem">Gallery</div>
  </div>

<div class="main">
    <h2>The Walk</h2>
    <p>The walk from Monterosso to Riomaggiore will take you approximately two hours, give or take an hour depending on the weather conditions and your physical shape.</p>
    <img src="img_5terre.jpg" style="width:100%">
  </div>

<div class="right">
    <h2>What?</h2>
    <p>Cinque Terre comprises five villages: Monterosso, Vernazza, Corniglia, Manarola, and Riomaggiore.</p>
    <h2>Where?</h2>
    <p>On the northwest cost of the Italian Riviera, north of the city La Spezia.</p>
    <h2>Price?</h2>
    <p>The Walk is free!</p>
  </div>
</div>

<div style="background-color:#f1f1f1;text-align:center;padding:10px;margin-top:7px;font-size:12px;"> This web page is a part of a demonstration of fluid web design made by w3schools.com. Resize the browser window to see the content respond to the resizing.</div>

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<!DOCTYPE html><html><head><meta name="viewport" content="width=device-width, initial-scale=1.0"><style>* {  box-sizing: border-box;}.menu {  float: left;  width: 20%;}.menuitem {  padding: 8px;  margin-top: 7px;  border-bottom: 1px solid #f1f1f1;}.main {  float: left;  width: 60%;  padding: 0 20px;  overflow: hidden;}.right {  background-color: lightblue;  float: left;  width: 20%;  padding: 10px 15px;  margin-top: 7px;}​@media only screen and (max-width:800px) {  /* For tablets: */  .main {    width: 80%;    padding: 0;  }  .right {    width: 100%;  }}@media only screen and (max-width:500px) {  /* For mobile phones: */  .menu, .main, .right {    width: 100%;