Heartbeat Pulse Animation
heartbeat pulse animation, animated heart shape, pulsing heart effect, scale and color changes, CSS heart animation, uionline pulse effect, smooth beating heart, responsive heart animation, lightweight CSS animation, romantic UI element, no JavaScript needed, modern pulse design, fluid heart scaling, glowing heart animation, interactive heartbeat visual, elegant pulse effect, CSS-only animation, love-themed UI, subtle color transitions, animated heartbeat icon
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