Overview of the new features of CSS3: How to use CSS3 to achieve transition effects

CSS3 is the latest version of CSS. Among the many new features, the most interesting and practical one should be Transition. Transition effects can make our pages smoother and more beautiful during interaction, giving users a good visual experience. This article will introduce the basic usage of CSS3 transition effects, with corresponding code examples.

1. Transition-property attribute: Specify the CSS property that needs to be transitioned
   The transition effect is achieved by changing one CSS style into another. The transition-property attribute is used to specify the CSS properties that need to be transitioned. Multiple properties can be specified at the same time, and multiple properties are separated by commas.

Sample code:

div {
  transition-property: width, height;
  /* 過渡寬度和高度 */
}

2. transition-duration attribute: Specify the duration of the transition
   The transition-duration attribute is used to specify the duration of the transition effect, the unit can Is seconds (s) or milliseconds (ms).

Sample code:

div {
  transition-duration: 1s;
  /* 過渡持續(xù)1秒鐘 */
}

3. transition-timing-function attribute: Specifies the speed curve of the transition effect
   The transition-timing-function attribute is used to specify the speed of the transition Curve, that is, the speed of change of the transition effect. Commonly used values ??include linear (linear), ease (gradient), ease-in (gradient acceleration), ease-out (gradient deceleration), etc.

Sample code:

div {
  transition-timing-function: ease-in-out;
  /* 漸變加速再漸變減速 */
}

4. transition-delay attribute: Specify the delay time of the transition
   The transition-delay attribute is used to specify the delay time of the transition effect, that is, transition The time to wait before the animation starts executing. The unit can also be seconds (s) or milliseconds (ms).

Sample code:

div {
  transition-delay: 0.5s;
  /* 延遲0.5秒后開始過渡 */
}

5. Transition abbreviation attribute: specify all transition attributes at one time
   The transition attribute is a shorthand attribute that can specify all transition related attributes at one time Properties, including transition-property, transition-duration, transition-timing-function and transition-delay.

Sample code:

div {
  transition: width 1s ease-in-out 0.5s;
  /* 過渡寬度，持續(xù)1秒，漸變加速再漸變減速，延遲0.5秒后開始 */
}

Through the above basic usage, a simple transition effect can be achieved. However, if we simply specify the styles before and after the change at once, the transition effect is still not good enough. If you want to make the transition effect more gorgeous, you can also use other new features of CSS3.

6. Hover effect of transition
   We can achieve the transition effect when the mouse hovers over the element by using the transition attribute in the :hover pseudo-class. This way, there will be a smooth transition animation when the user moves the mouse in or out of the element.

Sample code:

div {
  transition: width 1s;
}

div:hover {
  width: 200px;
}

7. transition combined with transform attribute
   The transform attribute is another powerful feature in CSS3, which can realize the rotation, scaling, displacement, etc. of elements Effect. Combined with the transition attribute, a cooler transition effect can be achieved.

Sample code:

div {
  transition: transform 1s ease-in-out;
}

div:hover {
  transform: rotate(180deg);
}

The above is the basic usage of CSS3 transition effects and some sample codes. By using these new features, we can easily achieve smooth, beautiful transition effects and improve the user experience of web pages. However, when using transition effects, you also need to pay attention to the compatibility of transition attributes. Different browsers may have different support for transition effects. In actual development, you can use browser vendor prefixes or use CSS preprocessors to solve compatibility issues.

I hope this article will help you understand the CSS3 transition effect. I hope you can flexibly use the new features of CSS3 in future development to create a better user interface!

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