霓虹閃爍
不規則亮度跳變，模擬老式霓虹燈管。
效果預覽
參數調節
完整代碼
/* 霓虹閃爍 */
@keyframes neonFlicker {
0%, 19%, 21%, 55%, 57%, 100% { opacity: 1; box-shadow: 0 0 12px rgba(56,189,248,.8); }
20%, 56% { opacity: .45; box-shadow: 0 0 3px rgba(56,189,248,.3); }
}
.neon-flicker { animation: neonFlicker 2.6s linear infinite; }