In this topic,
We are going to see how to create animation using gradient color.
Step-1: Create Html Code in the index.html file.
<body> <div class="rainbow"> </div> </body>
Step-2: Add CSS Code in the <style>…</style> on index.html file.
Note that the element’s pseudo-element-generated graphic is being used here, and the parent element’s width and height are identical to those of the parent 200 percent element overflow: hidden.
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
*, *::before, *::after {
box-sizing: border-box;
}
@keyframes rotate {
100% {
transform: rotate(1turn);
}
}
.rainbow {
position: relative;
z-index: 0;
width: 400px;
height: 300px;
border-radius: 10px;
overflow: hidden;
padding: 2rem;
}
.rainbow::before {
content: '';
position: absolute;
z-index: -2;
left: -50%;
top: -50%;
width: 200%;
height: 200%;
background-color: #399953;
background-repeat: no-repeat;
background-size: 50% 50%, 50% 50%;
background-position: 0 0, 100% 0, 100% 100%, 0 100%;
background-image: linear-gradient(#399953, #399953), linear-gradient(#fbb300, #fbb300), linear-gradient(#d53e33, #d53e33), linear-gradient(#377af5, #377af5);
animation: rotate 4s linear infinite;
}
.rainbow::after {
content: '';
position: absolute;
z-index: -1;
left: 6px;
top: 6px;
width: calc(100% - 12px);
height: calc(100% - 12px);
background: white;
border-radius: 5px;
animation: opacityChange 3s infinite alternate;
}
@keyframes opacityChange {
50% {
opacity: 1;
}
100% {
opacity: 0.5;
}
}
Review the below video.
