cssanimation停在结束

CSS animations are a powerful tool for adding movement and interactivity to web pages. They allow designers and developers to create engaging and dynamic user interfaces without relying on JavaScript or other scripting languages.

One of the common use cases for CSS animations is to animate an element and then have it stop at the end of the animation. This can be useful in various situations

such as creating a loading spinner or a hover effect that reveals additional content.

To achieve this

we can use the "animation-fill-mode" CSS property. By default

the value of this property is "none"

which means that the element will return to its original state after the animation is complete. However

we can change this value to "forwards"

which will make the element remain in its final state once the animation has finished.

Let's say we have a simple CSS animation that fades in an element:

```css

@keyframes fadeIn {

0% {

opacity: 0;

}

*** {

opacity: 1;

}

}

.fade-in {

animation-name: fadeIn;

animation-duration: 1s;

animation-fill-mode: both;

}

```

In this example

the ".fade-in" class applies the "fadeIn" animation to an element. By setting the "animation-fill-mode" property to "both"

the element will start at the initial state defined in the animation (opacity: 0) and end at the final state (opacity: 1)

and it will stay in the final state after the animation is complete.

This means that if we apply this class to an element

it will fade in and then stay fully visible. We can combine this technique with other CSS properties to create more complex animations.

For example

let's say we want to create a loading spinner that rotates 360 degrees and then stops. We can use the following CSS animation:

```css

@keyframes rotate {

0% {

transform: rotate(0deg);

}

*** {

transform: rotate(360deg);

}

}

.spinner {

width: 50px;

height: 50px;

border: 5px solid #000;

border-top-color: transparent;

border-radius: 50%;

animation-name: rotate;

animation-duration: 2s;

animation-fill-mode: both;

animation-timing-function: linear;

}

```

In this example

the ".spinner" class applies the "rotate" animation to a circular element. The animation starts with the element at 0 degrees of rotation and ends at 360 degrees. And

by setting the "animation-fill-mode" property to "both"

the element will remain at 360 degrees of rotation once the animation is complete.

By using the "animation-fill-mode" property

we can control how the element behaves after the animation ends. Whether we want the element to return to the initial state

stay in the final state

or something in between

this CSS property allows us to achieve the desired effect.

CSS animations not only provide visual appeal to a web page but also improve the user experience by adding interactivity and engagement. They are a versatile tool that can be used in various creative ways to enhance the user interface and bring static elements to life.

In conclusion

CSS animations can be made to stop at the end by using the "animation-fill-mode" property with a value of "forwards". This property allows the element to stay in its final state after the animation is complete

providing designers and developers with greater control over the appearance and behavior of their web pages.