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<!DOCTYPE html>
<html>
<head>
<style>
/* Style the element with the id "myHeader" */
#myHeader {
  background-color: lightblue;
  color: black;
  padding: 40px;
  text-align: center;
}
​
/* Style all elements with the class name "city" */
.city {
  background-color: tomato;
  color: white;
  padding: 10px;
} 
</style>
</head>
<body>
​
<h2>Difference Between Class and ID</h2>
<p>An HTML page can only have one unique id applied to one specific element, while a class name can be applied to multiple elements.</p>
​
<!-- A unique element -->
<h1 id="myHeader">My Cities</h1>
​
<!-- Multiple similar elements -->
<h2 class="city">London</h2>
<p>London is the capital of England.</p>
​
<h2 class="city">Paris</h2>
<p>Paris is the capital of France.</p>
​
<h2 class="city">Tokyo</h2>
<p>Tokyo is the capital of Japan.</p>
​
</body>
​
<!-- Mirrored from www.w3schools.com/html/tryit.asp?filename=tryhtml_id_class by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:24:41 GMT -->
</html>
​
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