Aura Expand Button - Free UI Component

Button Background #4f46e5

Text Color #ffffff

Button Label Expand Me

Hover Scale Factor 1.15

Rounding (px) 10

Vertical Padding (rem) 1

Horizontal Padding (rem) 2.5

Font Size (rem) 1

Aura Expand Button

A high-fidelity tactile interaction button that expands with a satisfying bounce on hover. Features dynamic shadow growth to emphasize its physical transformation.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Expand on Hover Button</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap" rel="stylesheet">
    <style>
        /* -- Variables ------------------------------------------------- */
        :root {
            --bg: {{primaryColor}};             /* Primary Surface */
            --text: {{textColor}};               /* Text Color */
            --radius: {{borderRadius}}px;        /* Corner Style */
            --v-pad: {{vPadding}}rem;            /* Vertical Tightness */
            --h-pad: {{hPadding}}rem;            /* Horizontal Space */
            --font-size: {{fontSize}}rem;        /* Typography Size */
            --scale: {{expandScale}};            /* Hover Growth Factor */
            --page-bg: #0f172a;
        }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: var(--page-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
        }

/* -- Button Implementation --------------------------------------- */
        .btn-expand {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: var(--v-pad) var(--h-pad);
            font-size: var(--font-size);
            font-weight: 700;
            color: var(--text);
            background-color: var(--bg);
            border: none;
            border-radius: var(--radius);
            cursor: pointer;
            text-decoration: none;
            transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            letter-spacing: -0.01em;
            outline: none;
            
            box-shadow: 
                0 4px 6px -1px rgba(0, 0, 0, 0.1), 
                0 2px 4px -1px rgba(0, 0, 0, 0.06);
        }

/* Hover Dynamics */
        .btn-expand:hover {
            transform: scale(var(--scale));
            box-shadow: 
                0 20px 25px -5px rgba(0, 0, 0, 0.2), 
                0 10px 10px -5px rgba(0, 0, 0, 0.1);
            filter: brightness(1.05);
        }

.btn-expand:active {
            transform: scale(0.95);
        }

</style>
</head>
<body>

<button class="btn-expand">
        {{buttonText}}
    </button>

</body>
</html>