试一试 - W3.CSS examples

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    <h1 class="w3-text-theme">W3.CSS</h1>
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   <li class="w3-padding-hor-16">Smller and faster</li>
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  <h1 class="w3-jumbo">HTML</h1>
  <p class="w3-xlarge">The Language for Building Web Pages</p>
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  <!DOCTYPE html><br>
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  <h1>This is a heading</h1><br>
  <p>This is a paragraph.</p><br><br>
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  <p><div class="w3-code cssHigh notranslate">
  body {<br>
      background-color: #d0e4fe;<br>}<br>h1 {<br>
      color: orange;<br>
      text-align: center;<br>}<br>p {<br>
      font-family: "Times New Roman";<br>
      font-size: 20px;<br>}
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<p><div class="w3-code jsHigh notranslate">
   // Click the button to change the color of this paragraph<br><br>function myFunction() {<br>
      var x;<br>
      x = document.getElementById("demo");<br>
      x.style.fontSize = "25px"; <br>
      x.style.color = "red"; <br>}
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  <p><div class="w3-code w3-white htmlHigh notranslate">
  <div class="w3-container w3-teal"><br>
      <h1>My Header</h1><br>
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  <img src="img_car.jpg" alt="Car" style="width:100%"><br><br>
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      <p>A car is a wheeled, self-powered motor vehicle used for transportation.</p><br>
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      <p>My Footer</p><br>
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