How to achieve image flipping effect in CSS3

In web design, pictures are one of the indispensable elements. There is often a need to perform special effects on pictures, such as picture flipping effects. So how to use CSS3 to achieve the image flip effect? This article will introduce in detail the method of achieving image flipping effect in CSS3.

1. Implementing the image flipping effect in CSS3

CSS3 provides us with two ways to achieve image flipping:

1. Use the transform attribute to flip the image
2. Use the backface-visibility attribute to flip the image

2. Use the transform attribute to flip the image

The transform attribute is a new attribute of CSS3, which can realize the translation of elements. Zoom, rotate and tilt. Among them, rotation is the basis for achieving the image flip effect. The syntax of the transform attribute is as follows:

transform: translate(x,y) scale(x,y) rotate(deg) skewX(deg) skewY(deg);

Among them, rotate(deg) is used to specify the angle of rotation of the element. If you set a positive value, it means clockwise rotation; if you set a negative value, it means counterclockwise rotation.

Specifically for the image flip effect, we need to use the rotateY(deg) attribute. rotateY(deg) is used to specify the angle at which the element is rotated around the Y axis. If you set a positive value, it means clockwise rotation; if you set a negative value, it means counterclockwise rotation.

The following is an example of CSS3 code to achieve image flipping effect:

.flip-container {
  perspective: 1000px; /* 设置透视点 */
}

.flipper {
  transition: 0.6s; /* 设置过渡特效 */
  transform-style: preserve-3d; /* 开启3D环境 */
  position: relative;
}

.front,
.back {
  backface-visibility: hidden; /* 隐藏背面 */
  position: absolute;
  top: 0;
  left: 0;
}

.front {
  z-index: 2;
}

.back {
  transform: rotateY(180deg); /* 初始角度为180度 */
}

.flipper:hover .front {
  transform: rotateY(-180deg); /* 翻转角度为-180度 */
}

.flipper:hover .back {
  transform: rotateY(0deg); /* 翻转角度为0度 */
}

3. Use the backface-visibility attribute to achieve image flipping

The backface-visibility attribute is used to define the back side of an element Whether it is visible, the default value is visible. When the value is hidden, the back of the element will be hidden. When implementing the image flip effect, we can use this attribute to control the display of the front and back of the image.

The following is an example of using the backface-visibility attribute to achieve the image flip effect:

.flip-container {
  perspective: 1000px; /* 设置透视点 */
}

.flip-container:hover .flipper {
  transform: rotateY(180deg); /* 翻转角度为180度 */
}

.flipper {
  transition: 0.6s; /* 设置过渡特效 */
  transform-style: preserve-3d; /* 开启3D环境 */
  position: relative;
}

.front,
.back {
  backface-visibility: hidden; /* 隐藏背面 */
  position: absolute;
  top: 0;
  left: 0;
}

.front {
  z-index: 2;
}

.back {
  transform: rotateY(180deg); /* 初始角度为180度 */
}

4. Summary

CSS3 provides a variety of ways to achieve the image flip effect, among which transform and The backface-visibility attribute is the two most commonly used methods, and their implementation principles are based on the 3D environment. Through the demonstration of the above sample code, everyone can learn how to use CSS3 to achieve the image flip effect, and master the basic implementation ideas of this effect.

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