Fifth page link: Moving Gradient Background with Pure CSS
Awesome! You're about to build a hybrid effect: a background that both shifts position and uses randomly changing gradients over time.
This effect combines the CSS-powered movement and JavaScript-powered randomness, creating a lively and dynamic animated background.
Animated Moving + Random Gradient Background
This version:
-
Animates the gradient position (moving background) ✅
-
Randomizes the gradient colors every few seconds ✅
Complete Working Example (HTML + CSS + JS)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Random Moving Gradient</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background: #111;
font-family: Arial, sans-serif;
}
.gradient-box {
width: 90vw;
height: 90vh;
border-radius: 20px;
color: white;
font-size: 28px;
font-weight: bold;
display: flex;
justify-content: center;
align-items: center;
background-size: 400% 400%;
animation: moveGradient 12s ease infinite;
transition: background-image 2s ease;
}
@keyframes moveGradient {
0% {
background-position: 0% 50%;
}
50% {
background-position: 100% 50%;
}
100% {
background-position: 0% 50%;
}
}
</style>
</head>
<body>
<div class="gradient-box">Random + Moving Gradient</div>
<script>
function getRandomColor() {
const letters = "0123456789ABCDEF";
let color = "#";
for (let i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
function generateGradient() {
const angle = Math.floor(Math.random() * 360);
const color1 = getRandomColor();
const color2 = getRandomColor();
const color3 = getRandomColor();
return `linear-gradient(${angle}deg, ${color1}, ${color2}, ${color3})`;
}
function updateGradient() {
const box = document.querySelector('.gradient-box');
box.style.backgroundImage = generateGradient();
}
// Initial load
updateGradient();
// Update every 5 seconds
setInterval(updateGradient, 5000);
</script>
</body>
</html>
✅ How It Works
-
CSS animation (
@keyframes moveGradient) moves the gradient. -
JS updates the
background-imagewith new random colors every 5 seconds. -
transitionensures the gradient swap is smooth.
Tips
-
Use developer tools to tweak colors or timing live!
-
Replace
getRandomColor()with a predefined palette for more aesthetic control. -
Works great on both desktop and mobile — super lightweight!
⚠️ Common Pitfalls
-
Text readability: If colors get too light, add
text-shadow. -
Performance: Too frequent updates (like every 1s) may cause CPU/GPU load on low-end devices.
-
Color clashes: Try limiting the color space for better visuals.
Would you like to expand this into a full-page animated website background or make it work on scroll?
