<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>React Div Expand Animation</title>
<script src="https://unpkg.com/react@17/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
<style>
body {
font-family: Arial, sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
background-color: #f5f5f5;
}
.animated-div {
width: 200px;
height: 100px;
background-color: #4CAF50;
color: white;
display: flex;
justify-content: center;
align-items: center;
cursor: pointer;
border-radius: 8px;
box-shadow: 0 4px 8px rgba(0,0,0,0.1);
transition: all 0.5s ease;
overflow: hidden;
}
.animated-div.expanded {
height: 300px;
background-color: #2196F3;
}
.content {
padding: 20px;
text-align: center;
}
.hidden-content {
opacity: 0;
max-height: 0;
transition: opacity 0.3s ease, max-height 0.5s ease;
}
.expanded .hidden-content {
opacity: 1;
max-height: 200px;
}
</style>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
const { useState } = React;
function ExpandingDiv() {
const [isExpanded, setIsExpanded] = useState(false);
const handleClick = () => {
setIsExpanded(!isExpanded);
};
return (
<div
className={`animated-div ${isExpanded ? 'expanded' : ''}`}
onClick={handleClick}
>
<div className="content">
<h3>Click to {isExpanded ? 'Collapse' : 'Expand'}</h3>
<div className="hidden-content">
<p>This content appears with a nice animation!</p>
<p>The animation uses CSS transitions for smooth effects.</p>
</div>
</div>
</div>
);
}
ReactDOM.render(<ExpandingDiv />, document.getElementById('root'));
</script>
</body>
</html>