How to set rotate at the rotation center point in css3-Front-end Q&A-php.cn

How to set rotate at the rotation center point in css3

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Release： 2022-04-24 10:50:22

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In CSS3, you can use the "transform-origin" attribute to set the rotation center point of rotate. This attribute can change the position of the transformed element. The first parameter sets the rotation position of the x-axis, and the second parameter sets Y-axis rotation position, the syntax is "transform-origin:x-axis position y-axis position".

How to set rotate at the rotation center point in css3

The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.

How to set the rotation center point of rotate in css3

The rotate() function is a built-in function used to rotate elements based on a given angle as a parameter. Angle can be set in degrees, ticks, radians or turns.

Usage:

rotate( angle )

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Parameters: This function accepts a single parameter angle representing the rotation angle. Positive and negative angles rotate the element clockwise and counterclockwise respectively.

The following example illustrates the rotate() function in CSS:

Example 1:

<!DOCTYPE html>  
<html>  
<head>  
    <title>CSS rotate() function</title>  
    <style>  
        body { 
            text-align:center; 
        } 
        h1 { 
            color:green; 
        } 
        .rotate_image { 
            transform:rotate(45deg); 
        } 
    </style>  
</head>  
  
<body>  
    <h1>GeeksforGeeks</h1> 
    <h2>CSS rotate() function</h2> 
    <br><br> 
      
    <img class="rotate_image" src=  
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190710102234/download3.png"
        alt="GeeksforGeeks logo">  
</body>  
</html>

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Output:

How to set rotate at the rotation center point in css3

The transform-Origin attribute allows you to change the position of the transformed element.

2D transform elements can change the X and Y axes of the element. Transform elements in 3D and also change the Z-axis of the element.

The syntax is:

transform-origin: x-axis y-axis z-axis;

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x-axis defines where the view is placed on the X-axis.

y-axis defines where the view is placed on the Y-axis.

The example is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>123</title>
<style>
#div1
{
position: relative;
height: 200px;
width: 200px;
margin: 100px;
padding:10px;
border: 1px solid black;
}
#div2
{
padding:50px;
position: absolute;
border: 1px solid black;
background-color: red;
transform: rotate(45deg);
transform-origin:20% 40%;
-ms-transform: rotate(45deg); /* IE 9 */
-ms-transform-origin:20% 40%; /* IE 9 */
-webkit-transform: rotate(45deg); /* Safari and Chrome */
-webkit-transform-origin:20% 40%; /* Safari and Chrome */
}
</style>
</head>
<body>
<div id="div1">
  <div id="div2">HELLO</div>
</div>
</body>
</html>

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Output result:

How to set rotate at the rotation center point in css3

(Learning video sharing: css video tutorial)

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