作业1:
盒子模型基本元素:内容(content)、外边距(margin)、边框(border)、内边距(padding)
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>盒子模型的元素实例</title> <style type="text/css"> .box{ width: 300px; height: 300px; background-color: yellow; margin: 20px; border: 20px solid lightblue; border-radius: 10px; text-align: center; } .box a{ line-height: 300px; font-size: 25px; } </style> </head> <body> <div class="box"><a href="">我是盒子模型</a> </div> </body> </html>
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作业2:
四种常用的定位操作实例
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>盒子模型的元素实例</title> <style type="text/css"> .box{ width: 300px; height: 300px; background-color: yellow; text-align: center; } .box a{ line-height: 300px; font-size: 25px; } .box2{ width: 300px; height: 300px; background-color: lightblue; text-align: center; display:table-cell; vertical-align: middle; } </style> </head> <body><h2>1.行内子元素居住设置</h2> <div class="box"><a href="">我是盒子模型</a> </div> <hr> <h2>2.多行文本子元素居住设置</h2> <div class="box2"> <span>我是多行文本居住</span><br> <span>我是多行文本居住</span> </div> <hr> <h2>3.块级子元素居住设置</h2> <div class="box2"> <span>我是多行文本居住</span><br> <span>我是多行文本居住</span> </div> </body> </html>
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作业3:
css定位操作绝对定位制作十字型块级实例
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>盒子模型的相对定位实例</title> <style type="text/css"> body{ margin: 0; } .box{ width: 600px; height: 600px; background-color: #888; position: absolute; } .box1{ width: 200px; height: 200px; background-color: lightcoral; position: absolute; left: 200px; top: 0px; } .box2{ width: 200px; height: 200px; background-color: lightgreen; position: absolute; top: 200px; left: 400px; } .box3{ width: 200px; height: 200px; background-color: lightblue; position: absolute; left: 200px; top: 400px; } .box4{ width: 200px; height: 200px; background-color: lightpink; position: absolute; left: 0px; top: 200px; } </style> </head> <body> <div class="box"></div> <div class="box1"></div> <div class="box2"></div> <div class="box3"></div> <div class="box4"></div> </body> </html>
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