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transition

CSS transitions are a way to create smooth and gradual animations between two states of an element. They allow you to change the values of CSS properties over a specified duration, giving your web page a more dynamic and interactive feel.

Brief Explanation of Transition

Transitions are used to create animations between two states of an element. They are defined using the transition property in CSS. The transition property specifies the CSS properties that should be animated, the duration of the animation, and the timing function that should be used to control the animation.

Here is an example of a simple transition:

<style>
    .box {
        width: 100px;
        height: 100px;
        background-color: red;
        transition: width 2s;
    }
    .box:hover {
        width: 200px;
    }
</style>

<div class="box"></div>

In this example, we have a <div> element with a class of box. The transition property is set to width 2s, which means that any changes to the width property of the .box element will be animated over a duration of 2 seconds. When the .box element is hovered over, the width property is changed to 200px, triggering the transition.

Code Examples

Here are some more examples of transitions:

Transitioning Multiple Properties

You can transition multiple properties at once by separating them with commas:

<style>
    .box {
        width: 100px;
        height: 100px;
        background-color: red;
        transition: width 2s, height 2s, background-color 2s;
    }
    .box:hover {
        width: 200px;
        height: 200px;
        background-color: blue;
    }
</style>

<div class="box"></div>

In this example, we are transitioning the width, height, and background-color properties of the .box element. When the .box element is hovered over, the width and height properties are changed to 200px, and the background-color property is changed to blue.

Transitioning with Different Timing Functions

You can use different timing functions to control the speed of the transition. The default timing function is ease, which starts slow, speeds up in the middle, and slows down again at the end. Here are some other timing functions you can use:

  • linear: The animation progresses at a constant pace.
  • ease-in: The animation starts slow and speeds up at the end.
  • ease-out: The animation starts fast and slows down at the end.
  • ease-in-out: The animation starts slow, speeds up in the middle, and slows down again at the end.
<style>
    .box {
        width: 100px;
        height: 100px;
        background-color: red;
        transition: width 2s ease-in-out;
    }
    .box:hover {
        width: 200px;
    }
</style>

<div class="box"></div>

In this example, we are using the ease-in-out timing function to control the speed of the transition. When the .box element is hovered over, the width property is changed to 200px, and the transition starts slow, speeds up in the middle, and slows down again at the end.

Transitioning with Delay

You can also add a delay to the transition using the transition-delay property:

<style>
    .box {
        width: 100px;
        height: 100px;
        background-color: red;
        transition: width 2s ease-in-out 1s;
    }
    .box:hover {
        width: 200px;
    }
</style>

<div class="box"></div>

In this example, we are adding a delay of 1 second to the transition using the transition-delay property. When the .box element is hovered over, the width property is changed to 200px, but the transition doesn't start until 1 second later.

Transitioning with Multiple Delays

You can also add different delays to different properties using the transition-delay property:

<style>
    .box {
        width: 100px;
        height: 100px;
        background-color: red;
        transition: width 2s ease-in-out 1s, height 2s ease-in-out 2s;
    }
    .box:hover {
        width: 200px;
        height: 200px;
    }
</style>

<div class="box"></div>

In this example, we are adding a delay of 1 second to the width property and a delay of 2 seconds to the height property using the transition-delay property. When the .box element is hovered over, the width and height properties are changed, but the width property starts transitioning 1 second later than the height property.

Conclusion

CSS transitions are a powerful tool for creating dynamic and interactive web pages. They allow you to create smooth and gradual animations between two states of an element, giving your web page a more polished and professional look. By using different timing functions and delays, you can control the speed and timing of the transition, creating a wide range of effects and animations.

References

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