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<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>
<div class="w3-container">
  <h2>Displaying Notes</h2>
  <p>The w3-panel class can be used to display all sorts of notes:</p>
  <div class="w3-panel w3-yellow">
    <p>London is the most populous city in the United Kingdom,
    with a metropolitan area of over 9 million inhabitants.</p>
  </div>
  <div class="w3-panel w3-border">
    <p>London is the most populous city in the United Kingdom,
    with a metropolitan area of over 9 million inhabitants.</p>
  </div>
  <div class="w3-panel w3-light-grey w3-border w3-round">
    <p>London is the most populous city in the United Kingdom,
    with a metropolitan area of over 9 million inhabitants.</p>
  </div>
  <div class="w3-panel w3-pale-blue w3-leftbar w3-border-blue">
    <p>London is the most populous city in the United Kingdom,
    with a metropolitan area of over 9 million inhabitants.</p>
  </div>
  <div class="w3-panel w3-pale-red w3-leftbar w3-rightbar w3-border-red">
    <p>London is the most populous city in the United Kingdom,
    with a metropolitan area of over 9 million inhabitants.</p>
  </div>
  <div class="w3-panel w3-pale-yellow w3-topbar w3-bottombar w3-border-yellow">
    <p>London is the most populous city in the United Kingdom,
    with a metropolitan area of over 9 million inhabitants.</p>