.glow-reply {
    color: #ffffff;
    font-weight: bold;
    text-shadow:
        0 0 4px #00eaff,
        0 0 8px #00eaff,
        0 0 16px #00eaff;
  }

glow

<span class="glow-reply">{param}</span>

[glow]هذا نص مضيء داخل الرد[/glow]

.glow-reply {
    color: #fff;
    font-weight: bold;
    animation: glowmove 2s infinite alternate;
}

@keyframes glowmove {
    from {
        text-shadow:
            0 0 5px #ff00ff,
            0 0 10px #ff00ff;
    }
    to {
        text-shadow:
            0 0 10px #00eaff,
            0 0 20px #00eaff;
    }
 }