CSS transform-origin用法及代碼示例

CSS的transform-origin屬性用於指定元素的旋轉原點。這是元素旋轉所圍繞的點。它可以用於2D和3D旋轉。

用法:

transform-origin:position | initial | inherit

屬性值：

position:這指定了旋轉原點的位置。它取3個值，分別對應於到盒子左邊的距離，到盒子頂邊的距離以及旋轉的z軸。

可以以長度單位，百分比或關鍵字指定值。 z軸值始終使用長度單位指定。

範例1：以長度單位指定位置

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        .outer { 
            margin:50px; 
            border:1px dotted; 
            position:relative; 
            height:100px; 
            width:400px; 
            background-color:lightgreen; 
        } 
          
        .box { 
            position:absolute; 
            border:1px solid; 
            background:url( 
"https://contribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-logo.png" 
            ) no-repeat; 
            
            background-size:cover; 
            height:100px; 
            width:400px; 
            transform:rotate(15deg); 
            transform-origin:10px 30px; 
        } 
    </style> 
</head> 
  
<body> 
    <h1>CSS transform-origin Property</h1> 
    <p>The CSS transform-origin Property is used to set 
      the origin of the element's transformation</p> 
    <div class="outer"> 
        <div class="box"></div> 
    </div> 
</body> 
  
</html>

輸出：
values

範例2：指定百分比位置

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        .outer { 
            margin:50px; 
            border:1px dotted; 
            position:relative; 
            height:100px; 
            width:400px; 
            background-color:lightgreen; 
        } 
          
        .box { 
            position:absolute; 
            border:1px solid; 
            background:url( 
"https://contribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-logo.png" 
            ) no-repeat; 
            
            background-size:cover; 
            height:100px; 
            width:400px; 
            transform:rotate(15deg); 
            transform-origin:50% 75%; 
        } 
    </style> 
</head> 
  
<body> 
    <h1>CSS transform-origin Property</h1> 
    <p>The CSS transform-origin Property is  
      used to set the origin of the element's 
      transformation</p> 
    <div class="outer"> 
        <div class="box"></div> 
    </div> 
</body> 
  
</html>

輸出：
percentage

範例3：指定關鍵字的位置

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        .outer { 
            margin:50px; 
            border:1px dotted; 
            position:relative; 
            height:100px; 
            width:400px; 
            background-color:lightgreen; 
        } 
          
        .box { 
            position:absolute; 
            border:1px solid; 
            background:url( 
"https://contribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-logo.png" 
            ) no-repeat; 
            
            background-size:cover; 
            height:100px; 
            width:400px; 
            transform:rotate(15deg); 
            transform-origin:bottom left; 
        } 
    </style> 
</head> 
  
<body> 
    <h1>CSS transform-origin Property</h1> 
    <p>The CSS transform-origin Property is  
      used to set the origin of the element's 
      transformation</p> 
    <div class="outer"> 
        <div class="box"></div> 
    </div> 
</body> 
  
</html>

輸出：
keyword-value

initial:這用於將屬性設置為其默認值。

例：

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        .outer { 
            margin:50px; 
            border:1px dotted; 
            position:relative; 
            height:100px; 
            width:400px; 
            background-color:lightgreen; 
        } 
          
        .box { 
            position:absolute; 
            border:1px solid; 
            background:url( 
"https://contribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-logo.png" 
            ) no-repeat; 
            
            background-size:cover; 
            height:100px; 
            width:400px; 
            transform:rotate(15deg); 
            transform-origin:initial; 
        } 
    </style> 
</head> 
  
<body> 
    <h1>CSS transform-origin Property</h1> 
    <p>The CSS transform-origin Property is 
      used to set the origin of the element's 
      transformation</p> 
    <div class="outer"> 
        <div class="box"></div> 
    </div> 
</body> 
  
</html>

輸出：
initial

inherit:這用於從其父項繼承屬性。

例：

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        /* this acts as the parent */ 
          
        .outer { 
            margin:50px; 
            border:1px dotted; 
            position:relative; 
            height:100px; 
            width:400px; 
            background-color:lightgreen; 
            /* set the property of the parent */ 
            transform-origin:bottom left; 
        } 
          
        .box { 
            position:absolute; 
            border:1px solid; 
            background:url( 
"https://contribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-logo.png" 
            ) no-repeat; 
            
            background-size:cover; 
            height:100px; 
            width:400px; 
            transform:rotate(15deg); 
            /* inherits the property of the parent */ 
            transform-origin:inherit; 
        } 
    </style> 
</head> 
  
<body> 
    <h1>CSS transform-origin Property</h1> 
    <p>The CSS transform-origin Property is used to set 
      the origin of the element's transformation</p> 
    <div class="outer"> 
        <div class="box"></div> 
    </div> 
</body> 
  
</html>

輸出：
inherit

支持的瀏覽器：下麵列出了transform-origin屬性支持的瀏覽器：

chrome 35.0
Internet Explorer 10.0
Firefox 16.0
Safari 9.0
Opera 23.0

相關用法

注：本文由純淨天空篩選整理自sayantanm19大神的英文原創作品 CSS | transform-origin Property。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。