HTML 類
對 HTML 進行分類(設置類),使我們能夠為元素的類定義 CSS 樣式。
為相同的類設置相同的樣式,或者為不同的類設置不同的樣式。
實例
<!DOCTYPE html> <html> <head> <style> .cities { background-color:black; color:white; margin:20px; padding:20px; } </style> </head> <body> <div class="cities"> <h2>London</h2> <p> London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants. </p> </div> </body> </html>
分類塊級元素
HTML <div> 元素是塊級元素。它能夠用作其他 HTML 元素的容器。
設置 <div> 元素的類,使我們能夠為相同的 <div> 元素設置相同的類:
實例
<!DOCTYPE html> <html> <head> <style> .cities { background-color:black; color:white; margin:20px; padding:20px; } </style> </head> <body> <div class="cities"> <h2>London</h2> <p>London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p> </div> <div class="cities"> <h2>Paris</h2> <p>Paris is the capital and most populous city of France.</p> </div> <div class="cities"> <h2>Tokyo</h2> <p>Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the most populous metropolitan area in the world.</p> </div> </body> </html>
分類行內元素
HTML <span> 元素是行內元素,能夠用作文本的容器。
設置 <span> 元素的類,能夠為相同的 <span> 元素設置相同的樣式。
實例
<!DOCTYPE html> <html> <head> <style> span.red {color:red;} </style> </head> <body> <h1>My <span class="red">Important</span> Heading</h1> </body> </html>