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HTML id attribute
Tryit: id vs class
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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>A class name can be used by multiple HTML elements, while an id name must only be used by one HTML element within the page:</p> <!-- An element with a unique id --> <h1 id="myHeader">My Cities</h1> <!-- Multiple elements with same class --> <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> </html>
