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@andronov04
glowing animation
Gemini 2.5 Pro
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Glowing Animation</title> <style> @import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@700&display=swap'); 
    :root {
        --glow-color-primary: hsl(186, 100%, 50%);
        --glow-color-secondary: hsl(320, 100%, 50%);
    }

    html, body {
        height: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
        overflow: hidden;
    }

    body {
        display: flex;
        justify-content: center;
        align-items: center;
        font-family: 'Exo 2', sans-serif;
        background-color: #000;
        background-image: radial-gradient(ellipse at center, #1b2735 0%, #090a0f 100%);
    }

    .container {
        text-align: center;
    }

    .glowing-text {
        color: #fff;
        font-size: clamp(3rem, 15vw, 10rem);
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        cursor: default;
        user-select: none;
        
        /* The core animation */
        animation: glow-animation 3s ease-in-out infinite alternate;
    }

    @keyframes glow-animation {
        0% {
            text-shadow: 
                0 0 10px #fff,
                0 0 20px var(--glow-color-primary),
                0 0 30px var(--glow-color-primary),
                0 0 40px var(--glow-color-primary),
                0 0 50px var(--glow-color-primary),
                0 0 60px var(--glow-color-primary),
                0 0 70px var(--glow-color-primary);
        }
        100% {
            text-shadow: 
                0 0 20px #fff,
                0 0 30px var(--glow-color-secondary),
                0 0 40px var(--glow-color-secondary),
                0 0 50px var(--glow-color-secondary),
                0 0 60px var(--glow-color-secondary),
                0 0 70px var(--glow-color-secondary),
                0 0 80px var(--glow-color-secondary);
        }
    }
    
    .glowing-box {
        position: relative;
        width: clamp(200px, 40vw, 400px);
        aspect-ratio: 1.618;
        background: rgba(255, 255, 255, 0.05);
        border-radius: 15px;
        margin-top: 5vh;
        display: flex;
        justify-content: center;
        align-items: center;
        overflow: hidden;
    }

    .glowing-box::before {
        content: '';
        position: absolute;
        width: 200%;
        height: 200%;
        background: conic-gradient(
            transparent, 
            var(--glow-color-primary), 
            var(--glow-color-secondary),
            transparent 30%
        );
        animation: rotate-glow 5s linear infinite;
    }

    .glowing-box::after {
        content: '';
        position: absolute;
        inset: 6px;
        background: #090a0f;
        border-radius: 10px;
    }
    
    .glowing-box span {
        z-index: 1;
        color: #ccc;
        font-size: clamp(1rem, 3vw, 1.5rem);
    }
    
    @keyframes rotate-glow {
        from {
            transform: rotate(0deg);
        }
        to {
            transform: rotate(360deg);
        }
    }

</style>
</head> <body> <div class="container"> <h1 class="glowing-text">GLOW</h1> <div class="glowing-box"> <span>ANIMATION</span> </div> </div> </body> </html>
Updated files
v1