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CSS Transitions

Introduction​

CSS transitions provide a way to control the speed of animation changes to CSS properties. This can enhance the user experience by making the changes appear smooth and visually appealing.

Basic Concepts​

What is a Transition?​

A transition is a way to animate a property change over a given duration.

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

Transition Properties​

transition-property​

Specifies the name of the CSS property the transition effect is for. Example: width, height, background-color, etc

.element {
  transition-property: background-color;
}

transition-duration​

Specifies the duration over which the transition should occur. Example: 1s, 200ms, etc

.element {
  transition-duration: 1s;
}

transition-timing-function​

Specifies the speed curve of the transition effect. Example: ease, linear, ease-in, ease-out, ease-in-out, cubic-bezier(n,n,n,n)

.element {
  transition-timing-function: ease-in-out;
}

transition-delay​

Specifies when the transition effect will start. Example: 0s, 1s, etc.

.element {
  transition-delay: 0.5s;
}

Shorthand Property​

You can combine all the individual transition properties into one shorthand property.

.element {
  transition: background-color 1s ease-in-out 0.5s;
}

Basic Transition​

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    .box {
      width: 100px;
      height: 100px;
      background-color: blue;
      transition: background-color 1s ease;
    }
    .box:hover {
      background-color: red;
    }
  </style>
</head>
<body>
  <div class="box"></div>
</body>
</html>

Transition Multiple Properties​

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    .box {
      width: 100px;
      height: 100px;
      background-color: blue;
      margin: 50px;
      transition: width 2s, height 2s, transform 2s;
    }
    .box:hover {
      width: 200px;
      height: 200px;
      transform: rotate(45deg);
    }
  </style>
</head>
<body>
  <div class="box"></div>
</body>
</html>

Delayed Transition​

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    .box {
      width: 100px;
      height: 100px;
      background-color: blue;
      transition: background-color 1s ease 2s; /* Delay of 2s */
    }
    .box:hover {
      background-color: red;
    }
  </style>
</head>
<body>
  <div class="box"></div>
</body>
</html>

Conclusion​

CSS transitions provide a simple way to create smooth animations and improve the user experience. Using the various transition properties, you can control your animations' timing, speed, and behaviour to create visually appealing effects.