Can this animation be achieved using only CSS3, without the use of Javascript?

Question

Can this animation be achieved using only CSS3, without the use of Javascript?

Looking to create a smooth background color transition using only CSS3? Check out this simple animation example below:

// Selecting the square element
var square = document.querySelector('.square');

// Initializing the yellow color percentage
var percentYellow = 0;

// Function to change the background color gradually
function changeBackground(){
    percentYellow = percentYellow + 10;
    // Applying linear gradient background
    square.style.background = 'linear-gradient(90deg, yellow '+percentYellow+'%, blue 0)';
    if(percentYellow <= 100){
        setTimeout(changeBackground, 200);
    }
}
changeBackground();

.square{
    width: 300px;
    height: 300px;
    background: linear-gradient(90deg, yellow 0%, blue 0);
    border: 1px solid;
}

<div class="square"></div>

javascript css

Answer 1

Answer №1

You have the ability to animate the background-position:

.square {
  width: 300px;
  height: 300px;
  background: linear-gradient(90deg, yellow 50%, blue 0);
  background-size: 200% 100%;
  background-position: 100% 0;
  border: 1px solid;
  animation: slideBG 2s linear forwards;
}
@keyframes slideBG {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: 0 0;
  }
}

<div class="square"></div>

Alternatively, as @Harry mentioned, you can utilize steps() to maintain the "stepped" transition like your javascript version:

.square {
  width: 300px;
  height: 300px;
  background: linear-gradient(90deg, yellow 50%, blue 0);
  background-size: 200% 100%;
  background-position: 100% 0;
  border: 1px solid;
  animation: slideBG 2s steps(10, end) forwards;
}
@keyframes slideBG {
  to {
    background-position: 0 0;
  }
}

<div class="square"></div>

Answer 2

You have the ability to animate the background-position:

.square {
  width: 300px;
  height: 300px;
  background: linear-gradient(90deg, yellow 50%, blue 0);
  background-size: 200% 100%;
  background-position: 100% 0;
  border: 1px solid;
  animation: slideBG 2s linear forwards;
}
@keyframes slideBG {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: 0 0;
  }
}

<div class="square"></div>

Alternatively, as @Harry mentioned, you can utilize steps() to maintain the "stepped" transition like your javascript version:

.square {
  width: 300px;
  height: 300px;
  background: linear-gradient(90deg, yellow 50%, blue 0);
  background-size: 200% 100%;
  background-position: 100% 0;
  border: 1px solid;
  animation: slideBG 2s steps(10, end) forwards;
}
@keyframes slideBG {
  to {
    background-position: 0 0;
  }
}

<div class="square"></div>

Answer 3

Answer №2

Achieving this effect is definitely possible. You have the option to style the .square element in blue while the ::after pseudo-element can be styled in yellow. To add depth to the animation, you can animate the width of the ::after element using keyframes:

@keyframes custom-animation {
  from {
    width: 0;
  }
  to {
    width: 300px;
  }
}
.square {
  width: 300px;
  height: 300px;
  background-color: blue;
  border: 1px solid;
}
.square::after {
  content: "";
  display: block;
  width: 300px;
  height: 300px;
  background-color: yellow;
  animation: custom-animation 1s; // Add your desired animation duration here
}

<div class="square"></div>

Answer 4

Achieving this effect is definitely possible. You have the option to style the .square element in blue while the ::after pseudo-element can be styled in yellow. To add depth to the animation, you can animate the width of the ::after element using keyframes:

@keyframes custom-animation {
  from {
    width: 0;
  }
  to {
    width: 300px;
  }
}
.square {
  width: 300px;
  height: 300px;
  background-color: blue;
  border: 1px solid;
}
.square::after {
  content: "";
  display: block;
  width: 300px;
  height: 300px;
  background-color: yellow;
  animation: custom-animation 1s; // Add your desired animation duration here
}

<div class="square"></div>

Answer 5

Answer №3

Utilizing CSS animations can enhance your web design. Remember to include animation-fill-mode: forwards; to maintain the final animation style rather than reverting back to the initial one.

animation-fill-mode: forwards - This property ensures that the target retains the computed values from the last keyframe encountered during execution. (Referenced from here)

.square {
  width: 300px;
  height: 300px;
  background: linear-gradient(90deg, yellow 0%, blue 0);
  border: 1px solid;
  animation: anim 2s;
  animation-fill-mode: forwards; /* Preserves the applied CSS after animation */
}
@keyframes anim {
  0% {    background: linear-gradient(90deg, yellow 0%, blue 0);  }
  10% {    background: linear-gradient(90deg, yellow 10%, blue 0);  }
  20% {    background: linear-gradient(90deg, yellow 20%, blue 0);  }
  30% {    background: linear-gradient(90deg, yellow 30%, blue 0);  }
  40% {    background: linear-gradient(90deg, yellow 40%, blue 0);  }
  50% {    background: linear-gradient(90deg, yellow 50%, blue 0);  }
  60% {    background: linear-gradient(90deg, yellow 60%, blue 0);  }
  70% {    background: linear-gradient(90deg, yellow 70%, blue 0);  }
  80% {    background: linear-gradient(90deg, yellow 80%, blue 0);  }
  90% {    background: linear-gradient(90deg, yellow 90%, blue 0);  }
  100% {    background: linear-gradient(90deg, yellow 100%, blue 0);  }
}

<div class="square"></div>

Answer 6

Utilizing CSS animations can enhance your web design. Remember to include animation-fill-mode: forwards; to maintain the final animation style rather than reverting back to the initial one.

animation-fill-mode: forwards - This property ensures that the target retains the computed values from the last keyframe encountered during execution. (Referenced from here)

.square {
  width: 300px;
  height: 300px;
  background: linear-gradient(90deg, yellow 0%, blue 0);
  border: 1px solid;
  animation: anim 2s;
  animation-fill-mode: forwards; /* Preserves the applied CSS after animation */
}
@keyframes anim {
  0% {    background: linear-gradient(90deg, yellow 0%, blue 0);  }
  10% {    background: linear-gradient(90deg, yellow 10%, blue 0);  }
  20% {    background: linear-gradient(90deg, yellow 20%, blue 0);  }
  30% {    background: linear-gradient(90deg, yellow 30%, blue 0);  }
  40% {    background: linear-gradient(90deg, yellow 40%, blue 0);  }
  50% {    background: linear-gradient(90deg, yellow 50%, blue 0);  }
  60% {    background: linear-gradient(90deg, yellow 60%, blue 0);  }
  70% {    background: linear-gradient(90deg, yellow 70%, blue 0);  }
  80% {    background: linear-gradient(90deg, yellow 80%, blue 0);  }
  90% {    background: linear-gradient(90deg, yellow 90%, blue 0);  }
  100% {    background: linear-gradient(90deg, yellow 100%, blue 0);  }
}

<div class="square"></div>

Answer 7

Answer №4

Here is a suggestion to try:

.box{
  width:300px;
  height:200px;
  border:solid 2px red;
  background-color:green;
  position:relative;
  }

.overlay{
  width:100%;
  height:100%;
  background-color: rgba(255, 255, 255, 0.6);
  animation:fade-in 3s ease-out;
  position:absolute;
  }

@keyframes fade-in{
  0%{opacity:0;}
  100%{opacity:1;}
  }

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

Answer 8

Here is a suggestion to try:

.box{
  width:300px;
  height:200px;
  border:solid 2px red;
  background-color:green;
  position:relative;
  }

.overlay{
  width:100%;
  height:100%;
  background-color: rgba(255, 255, 255, 0.6);
  animation:fade-in 3s ease-out;
  position:absolute;
  }

@keyframes fade-in{
  0%{opacity:0;}
  100%{opacity:1;}
  }

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

Answer 9

Answer №5

Using only CSS, this effect can be achieved

.square{
    width:300px;
    height:300px;
    background:linear-gradient(90deg, yellow 0%, blue 0);
    border:1px solid;
    animation-name: slide;
    animation-duration: 4s;
}
@keyframes slide {
  0% { background:linear-gradient(90deg, yellow 0%, blue 0); }
  10% { background:linear-gradient(90deg, yellow 10%, blue 0); }
  20% { background:linear-gradient(90deg, yellow 20%, blue 0); }
  /* and so on ... */
  100% { background:linear-gradient(90deg, yellow 100%, blue 0); }
}

Visit this link for a live demo

Answer 10

Using only CSS, this effect can be achieved

.square{
    width:300px;
    height:300px;
    background:linear-gradient(90deg, yellow 0%, blue 0);
    border:1px solid;
    animation-name: slide;
    animation-duration: 4s;
}
@keyframes slide {
  0% { background:linear-gradient(90deg, yellow 0%, blue 0); }
  10% { background:linear-gradient(90deg, yellow 10%, blue 0); }
  20% { background:linear-gradient(90deg, yellow 20%, blue 0); }
  /* and so on ... */
  100% { background:linear-gradient(90deg, yellow 100%, blue 0); }
}

Visit this link for a live demo

Answer 11

Answer №6

Update: While others managed to answer before me, I wanted to share a valuable link to documentation that may be helpful for those interested in creating CSS3 animations.

You have the ability to create captivating animations using only CSS3 by utilizing the @keyframes rules and animation-* properties.

For further guidance, refer to http://www.w3schools.com/css/css3_animations.asp.

Take a look at this code snippet:

<!DOCTYPE html>
<html>
<head>
<style> 
.square{
    width:100px;
    height:100px;
    background:linear-gradient(90deg, yellow 0%, blue 0%);
    border:1px solid;
    animation-name: example;
    animation-duration: 4s;
}

@keyframes example {
    0%   {background:linear-gradient(90deg, yellow 0%, blue 0%)}
    25%  {background:linear-gradient(90deg, yellow 25%, blue 0%)}
    50%  {background:linear-gradient(90deg, yellow 50%, blue 0%)}
    75%  {background:linear-gradient(90deg, yellow 75%, blue 0%)}
    100% {background:linear-gradient(90deg, yellow 100%, blue 0%)}
}
</style>
</head>
<body>

<div class="square"></div>

</body>
</html>

Please Note: There may be inconsistencies with vendors when working with these properties/rules, which could impact functionality (as experienced on Firefox 44). This sample code showcases the basic syntax to get you started.

Update: It's possible my challenges with getting it to work are related to the issues mentioned in the comments here.

Answer 12

Update: While others managed to answer before me, I wanted to share a valuable link to documentation that may be helpful for those interested in creating CSS3 animations.

You have the ability to create captivating animations using only CSS3 by utilizing the @keyframes rules and animation-* properties.

For further guidance, refer to http://www.w3schools.com/css/css3_animations.asp.

Take a look at this code snippet:

<!DOCTYPE html>
<html>
<head>
<style> 
.square{
    width:100px;
    height:100px;
    background:linear-gradient(90deg, yellow 0%, blue 0%);
    border:1px solid;
    animation-name: example;
    animation-duration: 4s;
}

@keyframes example {
    0%   {background:linear-gradient(90deg, yellow 0%, blue 0%)}
    25%  {background:linear-gradient(90deg, yellow 25%, blue 0%)}
    50%  {background:linear-gradient(90deg, yellow 50%, blue 0%)}
    75%  {background:linear-gradient(90deg, yellow 75%, blue 0%)}
    100% {background:linear-gradient(90deg, yellow 100%, blue 0%)}
}
</style>
</head>
<body>

<div class="square"></div>

</body>
</html>

Please Note: There may be inconsistencies with vendors when working with these properties/rules, which could impact functionality (as experienced on Firefox 44). This sample code showcases the basic syntax to get you started.

Update: It's possible my challenges with getting it to work are related to the issues mentioned in the comments here.

Answer 13

Answer №7

If you want to control the number of steps, simply specify it.

 .rectangle{
            width:400px;
            height:200px;
            background:red;
            border:2px solid black;
            position: relative;
        }
        .rectangle::before{
            content: '';
            display: block;
            position: absolute;
            background: green;
            left: 0;
            top:0;
            right:100%;
            bottom:0;
            -webkit-animation: move 3s steps(5);
            animation: move 3s steps(5);
        }

        @keyframes move {
           from { right: 100%; }
           to { right: 0; }
        }

<div class="rectangle"></div>

Answer 14

If you want to control the number of steps, simply specify it.

 .rectangle{
            width:400px;
            height:200px;
            background:red;
            border:2px solid black;
            position: relative;
        }
        .rectangle::before{
            content: '';
            display: block;
            position: absolute;
            background: green;
            left: 0;
            top:0;
            right:100%;
            bottom:0;
            -webkit-animation: move 3s steps(5);
            animation: move 3s steps(5);
        }

        @keyframes move {
           from { right: 100%; }
           to { right: 0; }
        }

<div class="rectangle"></div>

Can this animation be achieved using only CSS3, without the use of Javascript?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

Answer №7

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