In CSS3, you can use the "transform-origin" attribute to set the rotation reference point of the element. This attribute is used to change the position of the element's rotation. If it is a 2D rotation element, you can change the position of the element on the x and y axes. , if it is a 3D rotating element, you can change the position of the element on the x-axis, y-axis and z-axis. The syntax is "transform-origin:X-axis direction position Y-axis direction position Z-axis direction position;".
The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.
How to set the rotation reference point for css3 animation
Set the rotation reference point with the transform-Origin attribute
The transform-Origin attribute allows you to change the transformation element Location.
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.
To use this attribute, you must first use the transform attribute.
The syntax is:
transform-origin: x-axis y-axis z-axis;
x-axis
Defines where the view is placed on the X-axis.
y-axis
Defines where on the Y-axis the view is placed.
z-axis
Defines where on the Z-axis the view is placed.
Examples are as follows:
<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:50% 50%;
-ms-transform: rotate(45deg); /* IE 9 */
-ms-transform-origin:50% 50%; /* IE 9 */
-webkit-transform: rotate(45deg); /* Safari and Chrome */
-webkit-transform-origin:50% 50%; /* Safari and Chrome */
}
</style>
</head>
<body>
<div id="div1">
<div id="div2">HELLO</div>
</div>
</body>Output results:
(Learning video sharing: css video tutorial,html video tutorial)
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