In Cascading Style Sheets (CSS), the transition property is used to add special effects when changing from one CSS style to another. To create a transition effect, you must specify two things:

• the CSS property you want to add an effect to
• the duration of the effect

For example, if you want to change the color of a

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div {
  transition: color 5s;
} 

AJAX (Asynchronous JavaScript and XML) is a technique used to create asynchronous web applications. It allows web applications to send data to and from a server asynchronously without affecting the display of the page. It uses a combination of HTML, JavaScript and XML to update parts of a web page without refreshing the whole page.

The difference between AJAX and JavaScript is that AJAX is used for asynchronous communication, while JavaScript is used for building interactive webpages. JavaScript is a scripting language that runs on the client-side and can be used for more than just AJAX. It is a versatile language capable of handling not only AJAX operations, but also client-side tasks such as form validation, interactivity and animations.

html

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<img src="photo.png" id="animated-photo" />

css

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#animated-photo {
  animation: photo-animation 3s infinite;
}

@keyframes photo-animation {
  0% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(90deg);
  }
  50% {
    transform: rotate(180deg);
  }
  75% {
    transform: rotate(270deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

js

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// Get the element
const photo = document.querySelector("#animated-photo");

// Listen for the user to hover over the image
photo.addEventListener('mouseover', () => {
  // Start the animation
  photo.style.animationPlayState = 'running';
});

// Listen for user to leave image
photo.addEventListener('mouseout', () => {
  // Stop the animation
  photo.style.animationPlayState = 'paused';
});

Animated backgrounds can be used in coding through HTML, CSS and JavaScript. To implement an animated background, the background-image or background property could be used in CSS to set the image source. Additionally, you could use keyframe animations with CSS to create the animation. Additionally, JavaScript could be used to achieve animation. An example of an animated background using CSS is provided below:

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@keyframes backgroundAnim {
  0% {
    background-image: url("somebackground.jpg");
  }
  50% {
    background-image: url("someotherbackground.jpg");
  }
  100% {
    background-image: url("yetanotherbackground.jpg");
  }
}

body {
  animation-name: backgroundAnim;
  animation-duration: 5s;
  animation-iteration-count: infinite;
}

Yes, you can add a transition property to your landing page project with CSS. The syntax for the transition property would look something like this:

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.element {
    transition: property duration timing-function delay;
}

where

property is the css property that you want to animate duration is the length of time over which the animation will occur, specified in seconds or milliseconds timing-function defines how the animation will progress over the duration delay is the amount of time to wait before beginning the animation

For more information and examples, you can take a look at this MDN article: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions

You can use animated background images in HTML and CSS for web pages. To do so, you need to create an animation in a graphics program like Photoshop or GIMP and save it in an appropriate format, such as GIF or SVG. Then, you can use the standard CSS background-image property and set it to your animation file. The following example shows how to create a scrolling background effect using the HTML <div> and CSS background-image properties:

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<div style="background-image: url(animation.gif);">
  ... page content ...
</div>

You can create a moving text with JavaScript. First, create a simple HTML page that displays the text you want to animate. Next, add JavaScript to the page to create an animation effect. You can use CSS keyframes to animate the text, or use the setInterval function to move the text around the page.

For example, the following code displays a sentence that scrolls left across the screen:

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<div class="scrolling-text">
  Scrolling text! 
</div>

<style>
  .scrolling-text {
    position: relative;
    white-space: nowrap;
    animation: scroll-left 20s linear infinite;
  }

  @keyframes scroll-left {
    from {
     left: 100%;
     width: 500%; 
    }
    to {
      left: -100%;
      width: 500%;
    }
  }
</style>

<script>
  function scrollleft() {
    document.getElementById("scrolling-text").style.left = '100%';
    setTimeout(scrollleft, 25);
  }
   scrollleft();
</script>

You can learn more about using JavaScript for animation in this MDN guide.

Interactive background is a feature that enables users to generate a background that reacts to mouse movement. To achieve this effect, a combination of HTML, CSS, and JavaScript can be used.

In HTML, add a <div> element inside which elements for the background need to be added.

In CSS, set the size of the <div> to 100% in order to have the background fill the entire page. To create the animation, a keyframe animation should be defined. The animation should change the parameters of the background elements so they move. An example animation could be:

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@keyframes example {
  0%   { transform: rotate(0deg); left: 0; }
  100% { transform: rotate(360deg); left: 50%; }
}

In JavaScript, a function should be created that triggers the animation. A common way to trigger the animation is to add an onmousemove event listener that calls the animation function. An example JavaScript code looks like this:

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window.addEventListener("mousemove", () => {
  document.querySelector("div").style.animation = "example 2s linear infinite";
});

For more details about how to do interactive backgrounds, please refer to this article.

The transition property in CSS is used to animate changes from one CSS style to another. The transition-property specifies what property is being transitioned, such as width, height, opacity, etc. To apply a pointer during the transition, you can include the transition-timing-function: pointer attribute in the transition property. For example:

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div {
  width: 100px;
  transition: width 0.5s linear, transition-timing-function: pointer;
}
div:hover {
  width: 500px;
}

In this example, the transition property indicates that when the div element is hovered on, the width of the element will transition from 100px to 500px in 0.5 second, with a linear pointer.

Reference: MDN docs - transition

You can use the CSS animation property to create an infinitely animating gradient. The code for this would look something like this:

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background: linear-gradient(. . .);
animation: animate-gradient 5s linear infinite;

@keyframes animate-gradient {
0% {
  background-position: 0% 50%;
}
50% {
  background-position: 100% 50%;
}
100% {
  background-position: 0% 50%;
}
}

You can learn more about animating gradients here: https://codepen.io/taniarascia/pen/jkpdbp.

You can use the <animation> style property in CSS to create an infinite animated gradient. An example implementation is provided below.

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body {
    background: linear-gradient(90deg, #FF0000, #FFFF00);
    background-size: 400% 400%;
    animation: gradient 10s ease infinite;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

For more information about the <animation> style property, you can visit the MDN page.

CSS keyframes allow you to create animations that gradually change from one style to another. To create a keyframe, you must first specify the name of the animation using the @keyframes CSS at-rule, followed by your keyframe blocks. For example, this code creates an animation titled 'pulse':

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@keyframes pulse {
  0% {
    transform: scale3d(.5, .5, .5);
  }
  40% {
    transform: scale3d(1, 1, 1);
  }
  100% {
    transform: scale3d(1.5, 1.5, 1.5);
  }
}

Once a keyframe animation is defined, you can apply it to any element simply by referencing the animation name. For example, this applies the 'pulse' animation to an element with a class of '

1. Create and save a background image. The background image should be a high-resolution image with a large size.

2. Choose the animation type. Parallax animations can either move forward, in a sidewise motion, or in a 3D-view format. Make a decision on which works best for your project.

3. Test the animation. Make sure the animation runs smoothly and that all of the elements move properly.

4. Adjust the speed

CSS animation is the use of animation effects using cascading style sheets (CSS). Typically, there are two components to using CSS animation: setting up the animation using keyframes and applying the animation to an element using the animation property. CSS animation can be used to animate HTML elements like text, images, and shapes, as well as pseudo-elements. Alternatively, animations can be created using JavaScript and the DOM.